Four hundred ninety one
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.
In binary, 491 is represented as 111101011.
In hex, 491 is represented as 1eb.
Prime factorization of 491: 491.