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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.
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Continue Learning about Basic Math
Are 51 and 61 prime?
51 is a composite number but 61 is a prime number
Which is not a prime number 37 47 51 61?
51 = 3x17
Which of the following is not a composite number 61 51 41 33?
33 = 3 x 11 51 = 3 x 17 41 prime 61 prime
Are 51 61 71 91 prime numbers?
3 x 17 = 51. It has factors other than 1 and itself. It is composite. 61 is prime. Its only factors are 1 and 61. 71 is prime. Its only factors are 1 and 71. 7 x 13 = 91. It is a composite number.
Is 61 a composite number or a prime?
61 is prime.
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