61 is prime.
61 is already prime.
51 composite, 61 prime.
61 is a prime number
61 is a prime number. 49 is not a prime number as it is divisible by 7. 51 is not a prime number as it is divisible by 3.
61 is prime.
61 is prime.
61 is prime.
61 is a prime number.
61 is a Prime Number.
61 is already prime.
61 is already prime.
61 is a prime number. Its only factors are 1 and 61.
61 is prime
61 is already prime and is its own prime factor.
61 is already prime. Its only prime factor is itself.
61 is already prime; no factorization necessary.