The number 51 is a composite number because it has factors other than 1 and itself. Specifically, 51 can be divided evenly by 1, 3, 17, and 51. In contrast, prime numbers are only divisible by 1 and themselves.
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Well, honey, let me break it down for you. 51 is a composite number because it can be divided by 1, 3, 17, and 51. So, it's not part of the "prime" club, but hey, it's still a number just doing its thing.
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.
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