Q: Is 128,420 a Prime Number?

 A: No, 128,420 is not a prime number.

Why is 128,420 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 128420 can be evenly divided by 1 2 4 5 10 20 6,421 12,842 25,684 32,105 64,210 and 128,420, with no remainder.

Since 128,420 cannot be divided by just 1 and 128,420, it is not a prime number.


More Examples

Number 128,418128,419128,421128,422
Prime? nononono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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