251
Number 251 properties
- 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.
Number 251 - properties and curiosities
251 (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.
Related numbers
Quick answers
Is 251 prime?
Yes, 251 is prime.
What are the factors of 251?
1, 251
What is 251 in binary?
11111011