61 is a Prime number
51 composite, 61 prime.
61 is a prime number
13 prime 63 composite 61 prime 31 prime Well the question should have been either, Which one of these numbers is not a composite number? Or, Which one of these numbers is not a prime number?
The number 1 is neither composite nor prime.
61 is prime 28 = 4 x 7 = 2 x 14 83 is prime 29 is prime
51 composite, 61 prime.
61 is prime.
61 is prime.
61 is prime
31 and 61 are prime, the rest composite.
61 is a prime number
prime
51 is a composite number but 61 is a prime number
61 and 71 are prime numbers the rest are composite numbers
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.)
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
73 and 61 are prime numbers but 54 is a composite number