256 is not prime. 256 = 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2
Chat with our AI personalities
All even numbers are composite numbers because they can all have a factor of two taken out. So 256 is a composite number. It can be factored as 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 or 2^8.
38 is a composite number
119 is a prime number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
The number 121 is a composite number, since it is divisible by 11.
1155 is obviously a multiple of 5 and a multiple of 11, so it is a composite number.
53 is a prime number53 is a prime number.