61 has only two factors, 1 and 61, which means that it is a prime number. There are no other integers that are factors of 61. (A composite number can be divided by numbers besides 1 and itself.)
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61 is prime.
31 and 61 are prime, the rest composite.
51 is a composite number but 61 is a prime number
61 and 71 are prime numbers the rest are composite numbers
is the number 61 composite? no. it comes to the conclusion that is not composite because it is not divisible with any other number. Thus, 61 is a prime number. it is only divisible by 1 and 61