155 is a composite number. Its factors are 1, 5, 31, and 155.
155 is not a prime number, but a composite number, as it is divisible by 5 and 31.
155 five is composite. It is composite because it has 5 as a factor. The only number that can be neither prime nor composite is 1.
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. 155 is composite.
155 is not a prime number, hint: Any number ending in a 5 is divisible by 5.155 is a composite number
465 is a composite number. Its positive integer factors are: 1, 3, 5, 15, 31, 93, 155, 465
no
It is not a prime number, it is a composite number.
It is prime
86 is not a prime number, so is a composite.
155 is not a prime number, so it can't be a prime factor.
It is a Prime number, and therefore not a composite number.211 is a prime number.