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51 = 3x17
No, 51 is not a prime number. A prime number is a number that has only itself and 1 as a factor. 51's factors are 1,3,17, and 51.
The prime factorization of 51 = 3 * 17
the next prime number after 51 is 60 :)
51 is a composite number but 61 is a prime number