It is composite because it has more than two factors
31 is prime.
31 is a prime 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.
31 is a prime number because it is only divisible by 1 and itself.
The number 1 is neither a prime nor a composite number.
It is the only even prime number
It is composite because it has more than two factors
75 is a composite number because it has more than 2 factors
It is a prime number because it has only two factors which are itself and one
56 is a composite number because it has more than 2 factors
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. 5 is prime.
Forty three is a prime number because you cannot divide it evenly with another number. Composite numbers are numbers that can be divided evenly. For example, 40 and 42 are composite numbers.
31 is a prime number
31 is prime.
31 is a prime number because it has only two factors which are itself and one
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31 is a prime number because it has only two factors which are itself and one