Number 3 facts

The odd number 3 is spelled 🔊, and written in words: three. The ordinal number 3rd is said 🔊 and written as: third. The meaning of the number 3 in Maths: Is it Prime? Factorization and prime factors tree. The square root and cube root of 3. What is 3 in computer science, numerology, codes and images, writing and naming in other languages. Other interesting facts, videos, comments (1), news related to 3.

What is 3 in other units

The decimal (Arabic) number 3 converted to a Roman number is III. Roman and decimal number conversions.
The number 3 converted to a Mayan number is mayan number 3
Decimal and Mayan number conversions.

Weight conversion

3 kilograms (kg) = 6.6 pounds (lbs)
3 pounds (lbs) = 1.4 kilograms (kg)

Length conversion

3 kilometers (km) equals to 1.864 miles (mi).
3 miles (mi) equals to 4.828 kilometers (km).
3 meters (m) equals to 4.828 feet (ft).
3 feet (ft) equals 0.914 meters (m).
3 centimeters (cm) equals to 1.2 inches (in).
3 inches (in) equals to 7.6 centimeters (cm).

Temperature conversion

3° Fahrenheit (°F) equals to -16.1° Celsius (°C)
3° Celsius (°C) equals to 37.4° Fahrenheit (°F)

Power conversion

3 Horsepower (hp) equals to 2.21 kilowatts (kW)
3 kilowatts (kW) equals to 4.08 horsepower (hp)

Codes and images of the number 3

Number 3 morse code: ...--
Sign language for number 3: Sign language for number 3
Number 3 in braille:
Number 3 in braille
Images of the number
Image (1) of the numberImage (2) of the number
Number 3 black image Number 3 red image
More images, other sizes, codes and colors ...

Number 3 infographic

Photo of number 3

Photo of the number 3

Year 3 AD

  • Servius Sulpicius Galba, roman emperor was born in the year 3 AD
  • Sadiq Hidajat, Persian writer (Blind Person Owl), was born.

Gregorian, Hebrew, Islamic, Persian and Buddhist Year (Calendar)

Gregorian year 3 is Buddhist year 546.
Buddhist year 3 is Gregorian year 540 a. C.
Gregorian year 3 is Islamic year -638 or -637.
Islamic year 3 is Gregorian year 624 or 625.
Gregorian year 3 is Persian year -620 or -619.
Persian year 3 is Gregorian 624 or 625.
Gregorian year 3 is Hebrew year 3763 or 3764.
Hebrew year 3 is Gregorian year 3757 a. C.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is the official calendar in Iran and Afghanistan.

Share in social networks

share facebook linkedin pinterest twitter blogger enlace favorites

Mathematics of no. 3


Multiplication table of 3

3 multiplied by two equals 6 (3 x 2 = 6).
3 multiplied by three equals 9 (3 x 3 = 9).
3 multiplied by four equals 12 (3 x 4 = 12).
3 multiplied by five equals 15 (3 x 5 = 15).
3 multiplied by six equals 18 (3 x 6 = 18).
3 multiplied by seven equals 21 (3 x 7 = 21).
3 multiplied by eight equals 24 (3 x 8 = 24).
3 multiplied by nine equals 27 (3 x 9 = 27).
show multiplications by 6, 7, 8, 9 ...

Fractions: decimal fraction and common fraction

Fraction table of 3

Half of 3 is 1,5 (3 / 2 = 1,5 = 1 1/2).
One third of 3 is 1 (3 / 3 = 1).
One quarter of 3 is 0,75 (3 / 4 = 0,75 = 3/4).
One fifth of 3 is 0,6 (3 / 5 = 0,6 = 3/5).
One sixth of 3 is 0,5 (3 / 6 = 0,5 = 1/2).
One seventh of 3 is 0,4286 (3 / 7 = 0,4286 = 3/7).
One eighth of 3 is 0,375 (3 / 8 = 0,375 = 3/8).
One ninth of 3 is 0,3333 (3 / 9 = 0,3333 = 1/3).
show fractions by 6, 7, 8, 9 ...



Advanced math operations

Is Prime?

The number 3 is a prime number. The closest prime numbers are 2, 5.
The 3rd prime number in order is 5.

Factorization and factors (dividers)

The prime factors of 3
Prime numbers have no prime factors smaller than themselves.
The factors of 3 are 1, 3.
Total factors 2.
Sum of factors 4 .

Prime factor tree

3 is a prime number.


The second power of 32 is 9.
The third power of 33 is 27.


The square root √3 is 1,732051.
The cube root of 33 is 1,44225.


The natural logarithm of No. ln 3 = loge 3 = 1,098612.
The logarithm to base 10 of No. log10 3 = 0,477121.
The Napierian logarithm of No. log1/e 3 = -1,098612.

Trigonometric functions

The cosine of 3 is -0,989992.
The sine of 3 is 0,14112.
The tangent of 3 is -0,142547.

Number 3 in Computer Science

Code typeCode value
Unix timeUnix time 3 is equal to Thursday Jan. 1, 1970, 12:03 a.m. GMT
IPv4, IPv6Number 3 internet address in dotted format v4, v6 ::3
3 Decimal = 11 Binary
3 Decimal = 10 Ternary
3 Decimal = 3 Octal
3 Decimal = 3 Hexadecimal (0x3 hex)
3 BASE64Mw==
3 MD5eccbc87e4b5ce2fe28308fd9f2a7baf3
3 SHA177de68daecd823babbb58edb1c8e14d7106e83bb
3 SHA2244cfc3a1811fe40afa401b25ef7fa0379f1f7c1930a04f8755d678474
3 SHA2564e07408562bedb8b60ce05c1decfe3ad16b72230967de01f640b7e4729b49fce
3 SHA3846af11c83586822c3c74bb3ccef728bae5cfee67cad82dd7402711e530bec782fc02aff273569d22ddffb3b145f343768
More SHA codes related to the number 3 ...

If you know something interesting about the 3 number that you did not find on this page, do not hesitate to write us here.

Numerology 3

The number three (3) came to share genuine expression and sensitivity with the world. People associated with this number need to connect with their deepest emotions. The number 3 is characterized by its pragmatism, it is utilitarian, sagacious, dynamic, creative, it has objectives and it fulfills them. He/she is also self-expressive in many ways and with good communication skills.

It is the number of creativity, expressiveness, sociability, joy, joviality and optimism. It represents the creative power, the way to value his/her own image and the expression of himself/herself. It defines the "personal image" and in what way he/she relates to his/her close social environment.

Number 3 personality is charming and spontaneous. If it causes any harm to someone, will sincerely apologize. It generally has a great capacity for seduction that neutralizes any adverse situation. It really is almost impossible to find a personality 3 who is unfriendly. And it is also very difficult to find a number 3 that is calm and thoughtful. It has great dynamism and energy and behaves as if its only objective was to stand out. Conformity and routine are its worst enemies. Read more ...

Interesting facts about the number 3

Aircrafts and flights

  • 09/03/1962 the Aeroflot plane, flight number 03, Tupolev Tu-104A crashed in near Yelabuga, Tatarstan, Russia 79 passengers and 7 crew members died.

Areas, mountains and surfaces

  • The total area of Borneo is 288,869 square miles (748,168 square km). Country Brunei, Indonesia (Central, East, North, South and West Kalimantan) and Malaysia (Sabah and Sarawak). 3th largest island in the world.


Astronomy and space

  • (3) Juno is asteroid number 3. Was discovered by K. L. Harding from Lilienthal 9/1/1804.
  • Earth is the third planet.


  • Pokémon Venusaur (Fushigibana) is a Pokémon number # 003 of the National Pokédex. Venusaur is plant and poison type Pokémon in the first generation. It is a Monster and Grass egg group Pokémon. The other Venusaur indexes are Johto index 228 , Kalos Centro index 082 - Central Zone Pokédex.

History and politics

  • United Nations Security Council Resolution number 3, adopted 4 April 1946. Soviet troops in Iran. Resolution text.
  • The Nazis called Germany the Third Reich. The first two had been the Holy Roman Empire and the Prussian Empire.

In other fields

  • The number of trialism; Hegelian thesis, antithesis and synthesis, the Christian Trinity, the three substances of David de Dinant; God, matter, spirit ...
  • In many cultures the 3 is represented by three points, as in the case of Mayan numerals, or by three lines (horizontal or vertical). For example, in Roman numerals (III) and Chinese numerals (三).
  • 3 are the primary colors: yellow, magenta, and cyan.


  • Chuck Norris once won a game of Connect Four in 3 moves!


  • 3 is the greatest number of consecutive integers that can be pairwise relatively prime
  • 3 is the only prime sandwiched between a prime and a composite number
  • 3 is the only number which is equal to the sum of all the natural numbers less than it
  • 3 is the number of spatial dimensions we live in.


  • Britney Spears - 3 (Official HD Video)
  • The number 3 also appears in the song of A Perfect Circle, called "3 Libras"
  • '3 Kings', in Spanish '3 reyes', is a song by the American hip hop artist Slim Thug. It is also a song by American rapper Rick Ross.
  • The rock band Blind Melon titled one of their songs Three is a magic Number.
  • The Peruvian rock band Libido titled Tres to one of the songs on their album 'Hembra'.
  • 'Los Tres' is a Chilean rock group.
  • More music ...
  • 'Three Days Grace' is a rock band originally from Ontario, Canada. According to members of the band, the name comes from a philosophical question of whether you could change something in the life of another in just three days.
  • '3 Doors Down' is an American rock group founded in Escatawpa, Mississippi, United States in 1996. The band saw the letters fall off a building, which said “Doors Down” (doors down). The three represents the number of members.
  • '3 Little Words', in Spanish '3 small words', is a song by the British electropop singer Frankmusik.
  • '3' is a song recorded by American singer Britney Spears and also a song by American rock band Disturbed.
  • '3 Words', in Spanish '3 Palabras', is a song recorded by the English singer Cheryl Cole.
  • '3 Chances', in Spanish '3 Posibilidades', is a song by the Danish artist Oh Land.
  • '3WW' (pronounced 'Three Worn Words') is a song by the British indie rock band alt-J.


  • The 3 is the number of the Trinity in the Bible. It indicates a fullness and an inner holiness.
  • Satan tempts Jesus three times before giving up.
  • There are 3 named Angels in the Bible: Gabriel, Michael, and Lucifer.
  • For the Hebrews it symbolizes the 3 plagues that David passed.
  • For the Greeks and Romans it had religious meaning. They repeated the mystical words three times, made three libations in their liturgical ceremonies in which they sacrificed three animals.
  • Jesus stayed three days in the tomb.
  • More religions ...
  • There are 3 Wise Men: Melchior, Gaspar and Baltasar.
  • According to Christian doctrine, Jesus was crucified between two thieves and rose again on the third day.
  • The rule of three is a fundamental principle of Wicca (a neo-pagan religion, linked to witchcraft and other ancient religions).


  • You need 3 points of support to hold yourself in balance, eg the tripod.
  • Asimow postulated three laws of robotics.
  • Lithium is the chemical element in the periodic table that has the symbol Li and atomic number 3.


  • The best athletes to wear number 3
    Babe Ruth, MLB; Dwyane Wade, NBA; Allen Iverson, NBA; Dale Earnhardt, NASCAR; Bronko Nagurski, NFL; Harmon Killebrew, MLB; Candace Parker, WNBA; Diana Taurasi, WNBA


  • Photographs of three people are believed to bring bad luck in Vietnam.
  • In wars the number three has been considered bad luck, it was said that lighting three cigarettes with the same match was bad luck, it was not just a superstition, the first of the soldiers lit his cigar and the enemy could see it, with the second that ignited he could aim and thus when he reached the third one he could shoot and kill one of the soldiers.

Tv, movies and cinematography

  • 'Tres Colores' is a film trilogy.

№ 3 in other languages

How to say or write the number three in Spanish, German, French and other languages.
Spanish: 🔊 (número 3)


German: 🔊 (Nummer 3)


French: 🔊 (nombre 3)


Portuguese: 🔊 (número 3)


Hindi: 🔊 (संख्या 3)


Chinese: 🔊 (数 3)

Arabian: 🔊 (عدد 3)


Czech: 🔊 (číslo 3)


Korean: 🔊 (번호 3)

Danish: 🔊 (nummer 3)


Hebrew: (מספר 3)


Dutch: 🔊 (nummer 3)


Japanese: 🔊 (数 3)

Indonesian: 🔊 (jumlah 3)


Italian: 🔊 (numero 3)


Norwegian: 🔊 (nummer 3)


Polish: 🔊 (liczba 3)


Russian: 🔊 (номер 3)


Turkish: 🔊 (numara 3)


Thai: 🔊 (จำนวน 3)


Ukrainian: 🔊 (номер 3)


Vietnamese: 🔊 (con số 3)


Other languages ...

News to email

Receive news about "Number 3" to email

I have read the privacy policy


If you know something interesting about the number 3 or any other natural number (positive integer), please write to us here or on Facebook.

Name *

Comment (Maximum 2000 characters) *

  * Required fields
Legal Notices & Terms of Use
The content of the comments is the opinion of the users and not of It is not allowed to pour comments contrary to the laws, insulting, illegal or harmful to third parties. reserves the right to remove or not publish any inappropriate comment. It also reserves the right to publish a comment on another topic. Privacy Policy.


add new comment

Ayomide Awoniyi   Oct. 29, 2023
3 is the smallest evil number.

Frequently asked questions about the number 3

  • Is 3 prime and why?

    The number 3 is a prime number because its divisors are: 1, 3.

Number 3 in News

BBC: Cleethorpes: Chris Packham praises girl, 3, for saving starfish
Jessie and her mum put the stranded starfish in rockpools after Storm Babet washed them ashore.
Oct. 26, 2023
The Sydney Morning Herald: Girl, 3, shoots and kills sister, 4, in Texas
A three-year-old girl fatally wounded her sister, aged 4, in an unintentional shooting in Texas.
March 14, 2023
The Sydney Morning Herald: Gunman kills 3, including reporter covering initial shooting
Dylan Lyons has been named as the American TV journalist who was killed while reporting on the fatal shooting of a woman in Orlando.
Feb. 24, 2023

What is your opinion?