5 is a Prime number because it has only two factors which are itself and one.
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Any number ending in a 5, other than the number 5 itself, is composite.
It is neither. The concept of prime or composite is relevant for whole numbers greater than 1.
Both of these numbers are prime numbers.
Composite.because it has factors other then one and itself (5*5*3).
no, because a composite number can be found by multiplying three prime numbers. 3*2*5 = 30, and 30 is a composite number and also has 3 prime factors. Every prime number has 1 prime factor by the way, itself. 1 is neither prime nor composite.