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.
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
61 and 71 are prime numbers the rest are composite numbers
51 composite, 61 prime.
51 is 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.
51 is divisible by 3, therefor it is composite. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1, 2, and 0. 1, 2, and 0 have a different name.