A prime number is a whole number with exactly two factors: 1 and itself.
A prime number
A prime number.
A prime number
a prime number
A prime number is a whole number that has two factors which are itself and one. where as, A composite number has factors in addition to one and itself.
A prime.
One and the number itself.
This is called a composite number.
Factors refer to whole numbers, not decimals.
You are probably referring to a 'prime' number which has only the number 1 and itself as factors.
If it's a whole number, and those are its only factors, then it's a 'prime number'.