Eleven
11 is an odd number.
11 is a prime number, which means it is only divisible by 1 and itself.
11 is a palindrome.
11 is a Sophie Germain prime, which means that 2 x 11 + 1 = 23 is also a prime number.
In binary, 11 is represented as 1011.
In hex, 11 is represented as b.
Prime factorization of 11: 11.