Q: Is 400 a Prime Number?

 A: No, 400 is not a prime number.

Why is 400 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 400 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 50 80 100 200 and 400, with no remainder.

Since 400 cannot be divided by just 1 and 400, it is not a prime number.


More Examples

Number 398399401402
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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