# Number 1 facts

Number 1 spell 🔊, write in words: one. Ordinal number 1st is said 🔊 and write: first. Phone prefix +1 or 001. The meaning of the number 1 in Maths: Is it Prime? Factorization and prime factors tree. The square root and cube root of 1. What is 1 in computer science, numerology, codes and images, writing and naming in other languages. Other interesting facts, videos related to 1.

## What is 1 in other units

The decimal (Arabic) number 1 converted to a Roman number is I. Roman and decimal number conversions.
 The number 1 converted to a Mayan number is Decimal and Mayan number conversions.

#### Weight conversion

1 kilogram (kg) = 2.2 pounds (lbs)
1 pound (lbs) = 0.5 kilograms (kg)

#### Length conversion

1 kilometer (km) equals to 0.621 miles (mi).
1 mile (mi) equals to 1.609 kilometers (km).
1 meter (m) equals to 1.609 feet (ft).
1 feet (ft) equals 0.305 meters (m).
1 centimeter (cm) equals to 0.4 inches (in).
1 inch (in) equals to 2.5 centimeters (cm).

#### Temperature conversion

1° Fahrenheit (°F) equals to -17.2° Celsius (°C)
1° Celsius (°C) equals to 33.8° Fahrenheit (°F)

#### Power conversion

1 Horsepower (hp) equals to 0.74 kilowatts (kW)
1 kilowatt (kW) equals to 1.36 horsepower (hp)

### Codes and images of the number 1

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

### Photo of number 1

• Buddhism is introduced into China.
• Start of the Yuanshi era of the Chinese Han Dynasty.
• The first full year in the life of Jesus as assigned by Dionysius Exiguus in his Anno Domini era.
• Confucius is given his first royal title (posthumous name) of Lord Baochengxun Ni.
• Silk appears in Rome.
• The poem Metamorphoses is written.
• Emperor Ping of Han China's reign begins.

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

Gregorian year 1 is Buddhist year 544.
Buddhist year 1 is Gregorian year 542 a. C.
Gregorian year 1 is Islamic year -640 or -639.
Islamic year 1 is Gregorian year 622 or 623.
Gregorian year 1 is Persian year -622 or -621.
Persian year 1 is Gregorian 622 or 623.
Gregorian year 1 is Hebrew year 3761 or 3762.
Hebrew year 1 is Gregorian year 3759 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.

## Mathematics of no. 1

### Multiplications

#### Multiplication table of 1

1 multiplied by two equals 2 (1 x 2 = 2).
1 multiplied by three equals 3 (1 x 3 = 3).
1 multiplied by four equals 4 (1 x 4 = 4).
1 multiplied by five equals 5 (1 x 5 = 5).
1 multiplied by six equals 6 (1 x 6 = 6).
1 multiplied by seven equals 7 (1 x 7 = 7).
1 multiplied by eight equals 8 (1 x 8 = 8).
1 multiplied by nine equals 9 (1 x 9 = 9).
show multiplications by 6, 7, 8, 9 ...

### Fractions: decimal fraction and common fraction

#### Fraction table of 1

Half of 1 is 0,5 (1 / 2 = 0,5 = 1/2).
One third of 1 is 0,3333 (1 / 3 = 0,3333 = 1/3).
One quarter of 1 is 0,25 (1 / 4 = 0,25 = 1/4).
One fifth of 1 is 0,2 (1 / 5 = 0,2 = 1/5).
One sixth of 1 is 0,1667 (1 / 6 = 0,1667 = 1/6).
One seventh of 1 is 0,1429 (1 / 7 = 0,1429 = 1/7).
One eighth of 1 is 0,125 (1 / 8 = 0,125 = 1/8).
One ninth of 1 is 0,1111 (1 / 9 = 0,1111 = 1/9).
show fractions by 6, 7, 8, 9 ...

### Calculator

 1

#### Is Prime?

The number 1 is not a prime number.
The 1st prime number in order is 2.

#### Factorization and factors (dividers)

The prime factors of 1 are
The factors of 1 are 1.
Total factors 1.
Sum of factors 1 .

#### Powers

The second power of 12 is 1.
The third power of 13 is 1.

#### Roots

The square root √1 is 1 exact square root.
The cube root of 31 is 1 exact cube root.

#### Logarithms

The natural logarithm of No. ln 1 = loge 1 = 0.
The logarithm to base 10 of No. log10 1 = 0.
The Napierian logarithm of No. log1/e 1 = 0.

### Trigonometric functions

The cosine of 1 is 0,540302.
The sine of 1 is 0,841471.
The tangent of 1 is 1,557408.

### Properties of the number 1

More math properties ...

## Number 1 in Computer Science

Code typeCode value
Port 1/TCP, UDPTCPMUX
Unix timeUnix time 1 is equal to Thursday Jan. 1, 1970, 12:01 a.m. GMT
IPv4, IPv6Number 1 internet address in dotted format v4 0.0.0.1, v6 ::1
1 Decimal = 1 Binary
1 Decimal = 1 Ternary
1 Decimal = 1 Octal
1 Decimal = 1 Hexadecimal (0x1 hex)
1 BASE64MQ==
1 MD5c4ca4238a0b923820dcc509a6f75849b
1 SHA1356a192b7913b04c54574d18c28d46e6395428ab
1 SHA224e25388fde8290dc286a6164fa2d97e551b53498dcbf7bc378eb1f178
1 SHA38447f05d367b0c32e438fb63e6cf4a5f35c2aa2f90dc7543f8a41a0f95ce8a40a313ab5cf36134a2068c4c969cb50db776
More SHA codes related to the number 1 ...

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## Numerology 1

Number one (1) came to develop or balance creativity, independence, originality, self-reliance and confidence in the world. It reflects power, creative strength, quick mind, drive and ambition. It is the sign of individualistic and aggressive nature.

### 1Hz Wish Fulfillment

Manifest Your Dreams, Connecting With Angels, You are never alone.

The most prominent aspect of Personality 1 is its need to succeed. To achieve their dreams, people described with number one do not hesitate to use others for their own benefit. They are also the originators of ideas and actions, with the strength of their extraordinary will and their pioneering and individualistic capacity, they generate initiative. It is the symbol of leadership, personalities with abilities and skills to command. Number 1 person respects the opinions of others, but they only serve to improve its own. Ambitious and willing to take risks to get to the top. Called to excel at work and business. Read more ...

## Interesting facts about the number 1

### Asteroids

• (1) Ceres is asteroid number 1. It was discovered by G. Piazzi from Palermo Observatory on 1/1/1801.

### Aircrafts and flights

• 11/15/1978 the Icelandic Airlines plane, flight number 001, Douglas DC-8-63CF crashed in Katunayake, Sri Lanka 175 passengers and 8 crew members died.
• 03/01/1962 the American Airlines plane, flight number 1, Boeing 707-123B crashed in Jamaica Bay, New York, US 87 passengers and 8 crew members died.
• 07/28/1976 the ČSA plane, flight number 001, Ilyushin Il-18B crashed in Bratislava, Slovakia 70 passengers and 6 crew members died.

### Areas, mountains and surfaces

• The total area of Greenland (main island) is 822,700 square miles (2,130,800 square km). Country Denmark (Greenland forms a part of the Danish Realm). 1st largest island in the world.

### Games

• Pokémon Bulbasaur (Fushigidane) is a Pokémon number # 001 of the National Pokédex. Bulbasaur is plant and poison type Pokémon in the first generation. It is a Monster and Grass egg group Pokémon. The other Bulbasaur indexes are Kalos Centro index 080 - Central Zone Pokédex, Johto index 226 .

### History and politics

• United Nations Security Council Resolution number 1, adopted 25 January 1946. Establishing the Military Staff Committee. Resolution text.

### Mathematics

• 1 is the 1st centered triangular number

Example of 4th centered triangular number with 19 dots.
• 1 is the 1st centered square number

Example of 4th centered square number with 25 dots.
• 1 is the 1st centered pentagonal number

Example of 4th centered pentagonal number with 31 dots.
• 1 is the 1st centered hexagonal number

Example of 4th centered hexagonal number with 37 dots.
• 1 is the only positive integer that is neither prime nor composite
• 1 is the only number with exactly one positive divisor
• More mathematics ...
• 1 is the first figurate number of every kind, such as triangular number, pentagonal number and centered hexagonal number to name just a few
• 1 is the multiplicative identity.

### Mobile and telephony

• Number 1 or +1 or 001 is a dial the international call prefix for Canada. (00/+) is dial the international call prefix.
• Number 1 or +1 or 001 is a dial the international call prefix for United States. (00/+) is dial the international call prefix.

### Music

• Taylor Swift - the 1 (Official Lyric Video)
• 'One Direction' (frequently abbreviated as 1D) is a British-Irish boy band formed in 2010 in London (United Kingdom), on the occasion of the program The X Factor. The name is attributed to Harry Styles who repeated to his bandmates that they had to go in the same direction, if they wanted to win X Factor.
• '1 + 1' is a song performed by the American singer Beyoncé.
• '1%' is the fourth single by Tomomi Itano (Japanese idol, member of AKB48).
• '1 Train', in Spanish '1 tren', is a song by American hip hop recording artist ASAP Rocky.
• 'One' is the fourth and best song on the album 'And Justice for All', the fourth studio album by American heavy metal band Metallica.
• More music ...

### Religions

• The number 1 is used throughout the Bible to indicate God Himself.
• It is the number of monism and monotheism, one God, the beginning of all things, the One of Parmenides, the monologue.

### Science

• Hydrogen is the chemical element in the periodic table that has the symbol H and atomic number 1.

### Sports

• The best athletes to wear number 1
Oscar Robertson, NBA; Warren Moon, NFL; Ozzie Smith, MLB; Billy Martin, MLB; Pee Wee Reese, MLB

## № 1 in other languages

How to say or write the number one in Spanish, German, French and other languages.
 Spanish: 🔊 (número 1) uno German: 🔊 (Nummer 1) eins French: 🔊 (nombre 1) un Portuguese: 🔊 (número 1) um Hindi: 🔊 (संख्या 1) एक Chinese: 🔊 (数 1) 一 Arabian: 🔊 (عدد 1) واحد Czech: 🔊 (číslo 1) jedna Korean: 🔊 (번호 1) 일 Danish: 🔊 (nummer 1) et Hebrew: (מספר 1) אחת Dutch: 🔊 (nummer 1) één Japanese: 🔊 (数 1) 一 Indonesian: 🔊 (jumlah 1) satu Italian: 🔊 (numero 1) uno Norwegian: 🔊 (nummer 1) en Polish: 🔊 (liczba 1) jeden Russian: 🔊 (номер 1) один Turkish: 🔊 (numara 1) bir Thai: 🔊 (จำนวน 1) หนึ่ง Ukrainian: 🔊 (номер 1) один Vietnamese: 🔊 (con số 1) một Other languages ...

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