491
Number 491 properties
- 491 is an odd number.
- 491 is a prime number, which means it is only divisible by 1 and itself.
- 491 is a Sophie Germain prime, which means that 2 x 491 + 1 = 983 is also a prime number.
Number 491 - properties and curiosities
491 (number)
Prime factorization
Prime factorization of 491: 491.
Divisors
Divisor count: 2
1, 491
Factors of 491 are: 1, 491.
Representations
In octal, 491 is represented as 753.
In binary, 491 is represented as 111101011.
In hex, 491 is represented as 1EB.
Roman numeral: CDXCI
Curiosities
- 491 is part of the infinite sequence of prime numbers.
Related numbers
Quick answers
Is 491 prime?
Yes, 491 is prime.
What are the factors of 491?
1, 491
What is 491 in binary?
111101011