Q: Is 28 a Prime Number?

 A: No, 28 is not a prime number.

Why is 28 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 28 can be evenly divided by 1 2 4 7 14 and 28, with no remainder.

Since 28 cannot be divided by just 1 and 28, it is not a prime number.

More Examples

Number 26272930
Prime? nonoyesno
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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