Number 251 - properties and curiosities

251 (number)

251

Number 251 properties

  • Prime
  • 251 is an odd number.
  • 251 is a prime number, which means it is only divisible by 1 and itself.
  • 251 is a Sophie Germain prime, which means that 2 x 251 + 1 = 503 is also a prime number.

Prime factorization

Prime factorization of 251: 251.

Divisors

Divisor count: 2

1, 251

Factors of 251 are: 1, 251.

Representations

In octal, 251 is represented as 373.

In binary, 251 is represented as 11111011.

In hex, 251 is represented as FB.

Roman numeral: CCLI

Curiosities

  • 251 is part of the infinite sequence of prime numbers.

Quick answers

Is 251 prime?
Yes, 251 is prime.

What are the factors of 251?
1, 251

What is 251 in binary?
11111011