51 is a composite number. Its positive integer factors are 1, 3, 17, and 51.
51 is not a Prime number because it has more than two factors
51 is composite. Becasuse 17 x 3 = 51 It is two prime numbers multiplied together to make a composite.
51 is a composite number but 61 is a prime number
Composite
ANSWER: 61 is a prime number but 51 is a composite number.61 is a prime number because the factors of 61 are 1 and itself (61).51 is a composite number because the factors of 51 other 1 and itself (51) are 3 and 17.
61 and 71 are prime numbers the rest are composite numbers
51 composite, 61 prime.
51 is composite.
51 is composite. Becasuse 17 x 3 = 51 It is two prime numbers multiplied together to make a composite.
51 is composite, 103 is prime.
prime
prime
It is composite.
composite
51 is a composite number 3 x 17 = 51
It is composite.
51 is a composite number but 61 is a prime number
24 and 51 are composite, 3 is prime.