61 is a Prime number
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A prime number is a number with two and only two factors: 1 (also known as unity) and itself. A composite number is a number with more than two factors; in other words, it has at least one factor besides 1 and itself. The only factors of 61 are 1 and 61, so it is a prime number instead of a composite number.
1 is the only natural number which is neither prime nor composite. So, 61 is either prime or composite. 61 is not divisible any number except 1 and itself so it is a prime number.
61 is a primee number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 61 is prime.
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