129 is divisible by three, hence it is a composite number.
129 is a Composite Number.
129 is not a prime number because it has more than two factors and so therefore it is a composite number
129 - 112 = 17
129 is divisible by 3. 1+2+9=12 and 12 is divisible by 3. That is the rule of divisibility by 3.
It is a composite number.
It is not a prime number, it is a composite number.
It is not a prime number, it is a composite number.
It is a composite number, not a prime number.
It is a prime number, and therefore not a composite number.251 is prime.
It is a prime number, and therefore not a composite number.211 is a prime number.
It is a Prime number, and therefore not a composite number.211 is a prime number.