The number 5

Representation numerals

Greek numeral: εʹ

Arabic numeral: ٥

Roman numeral: V

Numeral systems

Binary: 101

Septimal (base 7): 5

Octal: 5

Hexadecimal: 5

Factorization

5 is a prime number

Sums & differences

5 is the sum of the first 2 prime numbers: 5 = 2 + 3

Difference of 2 squares: 5 = 3² - 2²

Characteristics

5 is a Fibonacci number

5 is a pentagonal number

Related primes

The 5th prime number is: 11

Previous prime number: 3 — Next prime number: 7

This number is a twin prime, the other twin is 7

This number is a twin prime, the other twin is 3

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