Q: Is 21,402,210 a Prime Number?

 A: No, 21,402,210 is not a prime number.

Why is 21,402,210 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 21402210 can be evenly divided by 1 2 3 5 6 10 15 30 713,407 1,426,814 2,140,221 3,567,035 4,280,442 7,134,070 10,701,105 and 21,402,210, with no remainder.

Since 21,402,210 cannot be divided by just 1 and 21,402,210, it is not a prime number.


More Examples

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

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