Number 13 facts
The odd number 13 is spelled 🔊, and written in words: thirteen. The ordinal number 13rd is said 🔊 and written as: thirteenth. The meaning of the number 13 in Maths: Is it Prime? Factorization and prime factors tree. The square root and cube root of 13. What is 13 in computer science, numerology, codes and images, writing and naming in other languages. Other interesting facts, news related to 13.
What is 13 in other units
The number 13 converted to a Mayan number is | |
Decimal and Mayan number conversions. |
Weight conversion
13 kilograms (kg) = 28.7 pounds (lbs)
13 pounds (lbs) = 5.9 kilograms (kg)
Length conversion
13 kilometers (km) equals to 8.078 miles (mi).
13 miles (mi) equals to 20.921 kilometers (km).
13 meters (m) equals to 20.921 feet (ft).
13 feet (ft) equals 3.962 meters (m).
13 centimeters (cm) equals to 5.1 inches (in).
13 inches (in) equals to 33.0 centimeters (cm).
Temperature conversion
13° Fahrenheit (°F) equals to -10.6° Celsius (°C)
13° Celsius (°C) equals to 55.4° Fahrenheit (°F)
Power conversion
13 Horsepower (hp) equals to 9.56 kilowatts (kW)
13 kilowatts (kW) equals to 17.68 horsepower (hp)
Codes and images of the number 13
Number 13 morse code: .---- ...--Sign language for number 13:
Number 13 in braille:
Images of the number | |
Image (1) of the number | Image (2) of the number |
More images, other sizes, codes and colors ... | |
Number 13 infographic |
Photo of number 13
Year 13 AD
- Tiberius made his triumphant procession through Rome after siege of Germany.
- The year 13 AD was the last year of shijianguo era of the Chinese Xin Dynasty.
Gregorian, Hebrew, Islamic, Persian and Buddhist Year (Calendar)
Gregorian year 13 is Buddhist year 556.Buddhist year 13 is Gregorian year 530 a. C.
Gregorian year 13 is Islamic year -628 or -627.
Islamic year 13 is Gregorian year 634 or 635.
Gregorian year 13 is Persian year -610 or -609.
Persian year 13 is Gregorian 634 or 635.
Gregorian year 13 is Hebrew year 3773 or 3774.
Hebrew year 13 is Gregorian year 3747 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.
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Mathematics of no. 13
Multiplications
Multiplication table of 13
13 multiplied by two equals 26 (13 x 2 = 26).
13 multiplied by three equals 39 (13 x 3 = 39).
13 multiplied by four equals 52 (13 x 4 = 52).
13 multiplied by five equals 65 (13 x 5 = 65).
13 multiplied by seven equals 91 (13 x 7 = 91).
13 multiplied by eight equals 104 (13 x 8 = 104).
13 multiplied by nine equals 117 (13 x 9 = 117).
Fractions: decimal fraction and common fraction
Fraction table of 13
Half of 13 is 6,5 (13 / 2 = 6,5 = 6 1/2).
One third of 13 is 4,3333 (13 / 3 = 4,3333 = 4 1/3).
One quarter of 13 is 3,25 (13 / 4 = 3,25 = 3 1/4).
One fifth of 13 is 2,6 (13 / 5 = 2,6 = 2 3/5).
One seventh of 13 is 1,8571 (13 / 7 = 1,8571 = 1 6/7).
One eighth of 13 is 1,625 (13 / 8 = 1,625 = 1 5/8).
One ninth of 13 is 1,4444 (13 / 9 = 1,4444 = 1 4/9).
Calculator
13 | ||||
Advanced math operations
Is Prime?
The number 13 is a prime number. The closest prime numbers are 11, 17.
The 13rd prime number in order is 41.
Factorization and factors (dividers)
The prime factors of 13
Prime numbers have no prime factors smaller than themselves.
The factors of 13 are 1, 13.
Total factors 2.
Sum of factors 14 (1).
Prime factor tree
13 is a prime number.
Powers
The second power of 13^{2} is 169.
The third power of 13^{3} is 2.197.
Roots
The square root √13 is 3,605551.
The cube root of ^{3}√13 is 2,351335.
Logarithms
The natural logarithm of No. ln 13 = log_{e} 13 = 2,564949.
The logarithm to base 10 of No. log_{10} 13 = 1,113943.
The Napierian logarithm of No. log_{1/e} 13 = -2,564949.
Trigonometric functions
The cosine of 13 is 0,907447.The sine of 13 is 0,420167.
The tangent of 13 is 0,463021.
Number 13 in Computer Science
Code type | Code value |
---|---|
Port 13/TCP, UDP | DAYTIME protocol |
Unix time | Unix time 13 is equal to Thursday Jan. 1, 1970, 12:13 a.m. GMT |
IPv4, IPv6 | Number 13 internet address in dotted format v4 0.0.0.13, v6 ::d |
13 Decimal | = 1101 Binary |
13 Decimal | = 111 Ternary |
13 Decimal | = 15 Octal |
13 Decimal | = D Hexadecimal (0xd hex) |
13 BASE64 | MTM= |
13 MD5 | c51ce410c124a10e0db5e4b97fc2af39 |
13 SHA1 | bd307a3ec329e10a2cff8fb87480823da114f8f4 |
13 SHA224 | 86730f0dd6381286d3b5f0dfb897ce4895480ce97564c6be4f1543b8 |
13 SHA256 | 3fdba35f04dc8c462986c992bcf875546257113072a909c162f7e470e581e278 |
13 SHA384 | 6356fbb43627033e886785c2a9c16980336df008b720d23f98b35e06ee69246287739c9d7458b39356c3bdb1e4e2c7fc |
More SHA codes related to the number 13 ... |
If you know something interesting about the 13 number that you did not find on this page, do not hesitate to write us here.
Numerology 13
Numerology number 13: what does it mean spiritually?
The combined energy of number 1 and number 3 is represented by the number 13. There is a lot of symbolism behind this number and it carries a lot of power.
This number can be interpreted as the expression of our renewed passion and motivation since it combines these two energies. Tradition, planning, judgment, and effort are also associated with it.
It is usually very traditional, very organized, and very hard working to be a person with the number 13. Positive traits are being developed in these people through their negative attributes. For them to reach spiritual awareness, many trials and temptations are required.
Read more ...The meaning of the number 3 (three), numerology 3
Character frequency 3: 1
The meaning of the number 1 (one), numerology 1
Character frequency 1: 1
Interesting facts about the number 13
Areas, mountains and surfaces
- The total area of Java is 53,589 square miles (138,794 square km). Country Indonesia (Banten, Jakarta, Yogyakarta and Central, East and West Java). 13th largest island in the world.
- The total area of United States Minor Outlying Islands is 2,687.04 square miles (6,959.41 km²) and the water area is 2,678 square miles (6,937 km²) and the land area is 13.2 square miles (34.2 km²).
Astrology
- It is one of the lucky numbers for the zodiac sign Scorpio.
- What is astrology and what is it for?
Astronomy and space
- (13) Egeria is asteroid number 13. Was discovered by A. de Gasparis from Obs. Astronómico de Capodimonte 11/2/1850.
- Apollo 13 was a NASA Moon mission famous for being a 'successful failure' in 1970.
Distances between cities
- There is a 13 miles (20 km) direct distance between Abū Ghurayb (Iraq) and Baghdad (Iraq).
- There is a 13 miles (20 km) direct distance between Álvaro Obregón (Mexico) and Ciudad Nezahualcoyotl (Mexico).
- There is a 13 miles (20 km) direct distance between Delhi (India) and Ghāziābād (India).
- There is a 13 miles (20 km) direct distance between Depok (Indonesia) and Jakarta (Indonesia).
- More distances between cities ...
Games
History and politics
- United Nations Security Council Resolution number 13, adopted 12 December 1946. Admission of Siam (Thailand). Resolution text.
In other fields
- Unreasoned fear of the number 13 is termed triskaidekaphobia
- On average a person laughs 13 times in a day.
- Symbol of Hate: The number 13 is a numerical symbol of the Aryan Circle, the great racist prison gang based in Texas. Substitute letters for numbers, 1 and 3 equals A and C, that is, AC or Aryan Circle. The list of evil numbers.
- Dreaming of the number 13 means transformation to the new, much higher and spiritual being.
Mathematics
- 13 is the 3rd centered square number
Example of 4th centered square number with 25 dots. - 13 is the smallest prime which is not a minimal prime
- 13 is the smallest prime which can be represented as sum of two primes (i.e., 2 + 11) as well as sum of two composite numbers (i.e., 9 + 4)
- 13 is the number of times in one century when the date in the format month day and the last two digits of the year can be written with the same digit
- 13 is the number of intersections of diagonals inside a regular hexagon
- 13 is the number of Archimedean solids.
- More mathematics ...
Religions
- 13 were the diners of the Last Supper of Christ
- The apparitions of the Virgin of Fatima in 1917 were claimed to occur on the 13th of six consecutive months.
- In Judaism, 13 signifies the age when a boy matures and becomes a Bar Mitzvah, that is, a full member of the Jewish faith.
Science
- Aluminium is the chemical element in the periodic table that has the symbol Al and atomic number 13.
Sports
- Ángel Nieto Roldán was a Spanish motorcycling pilot, world speed champion 13 times.
- The best athletes to wear number 13
Wilt Chamberlain, NBA; Dan Marino, NFL; Alex Rodriguez, MLB; Steve Nash, NBA; James Harden, NBA
Superstitions
- For Spain and Latin America, Tuesday the 13th is bad luck. For France and English-speaking countries it is Friday the 13th.
- The number 13 in Japan is considered bad for a purely mathematical reason, since it is the sum of 9 and 4.
Tv, movies and cinematography
- Film: 13 Rue Madeleine (13 Rue Madeleine) Year: 1946 Length: 92 Director: Henry Hathaway Featuring: James Cagney; Annabella
- Film: 13 Tzameti (13 Tzameti) Year: 2005 Duration: 95 Director: Géla Babluani With: George Babluani; Pascal Bongard
- Apollo 13 is a 1995 American film that recounts the problems of the failed Apollo 13 lunar mission. The film is a free adaptation of the novel Lost Moon, written by Jim Lovell (the Apollo 13 mission commander) and Jeffrey Kluger.
Please write us
If you know something interesting about the number 13 or any natural number (positive integer), please write to us.№ 13 in other languages
Spanish: | 🔊 (número 13) | trece |
German: | 🔊 (Nummer 13) | dreizehn |
French: | 🔊 (nombre 13) | treize |
Portuguese: | 🔊 (número 13) | treze |
Hindi: | 🔊 (संख्या 13) | तेरह |
Chinese: | 🔊 (数 13) | 十三 |
Arabian: | 🔊 (عدد 13) | ثلاثة عشر |
Czech: | 🔊 (číslo 13) | třináct |
Korean: | 🔊 (번호 13) | 십삼 |
Danish: | 🔊 (nummer 13) | tretten |
Hebrew: | (מספר 13) | שלש עשרה |
Dutch: | 🔊 (nummer 13) | dertien |
Japanese: | 🔊 (数 13) | 十三 |
Indonesian: | 🔊 (jumlah 13) | tiga belas |
Italian: | 🔊 (numero 13) | tredici |
Norwegian: | 🔊 (nummer 13) | tretten |
Polish: | 🔊 (liczba 13) | trzynaście |
Russian: | 🔊 (номер 13) | тринадцать |
Turkish: | 🔊 (numara 13) | onüç |
Thai: | 🔊 (จำนวน 13) | สิบสาม |
Ukrainian: | 🔊 (номер 13) | тринадцять |
Vietnamese: | 🔊 (con số 13) | mười ba |
Other languages ... |
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Frequently asked questions about the number 13
Is 13 prime and why?
The number 13 is a prime number because its divisors are: 1, 13.
How do you write the number 13 in words?
13 can be written as "thirteen".
Number 13 in News
France24: At least 13 dead after university shooting in central Prague
A lone gunman opened fire Thursday in a university building in downtown Prague, killing at least 13 people and wounding more than 20 in the Czech Republic’s worst-ever mass shooting, police said. Dec. 21, 2023 |
NyTimes: Explosion Near Al Shifa Hospital in Gaza Kills 13 and Injures Many Others
The Israeli military said it targeted an ambulance “being used by a Hamas terrorist cell.” At the time, Palestinians said, a convoy of ambulances was preparing to take wounded people to the Gaza border. Nov. 4, 2023 |
BBC: Hamas officials say 13 killed in blast outside Gaza City's Al-Shifa hospital
Israel said it hit an ambulance it said was carrying Hamas operatives without specifying where. Nov. 3, 2023 |
France24: Astronaut Thomas K. Mattingly, who helped save Apollo 13, dies aged 87
A NASA astronaut who was removed from the ill-fated Apollo 13 mission but helped bring its crew back home safely thanks to his problem-solving efforts from ground control has died at the age of 87. Nov. 3, 2023 |
BBC: A slave at 13 - but how did a Ghanaian man end up changing UK history?
Quobna Cugoano was captured by slavers aged 13 but later played a big part in the UK abolition movement. Sept. 20, 2023 |