Q: Is 21,142,375 a Prime Number?

 A: No, 21,142,375 is not a prime number.

Why is 21,142,375 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 21142375 can be evenly divided by 1 5 25 79 125 395 1,975 2,141 9,875 10,705 53,525 169,139 267,625 845,695 4,228,475 and 21,142,375, with no remainder.

Since 21,142,375 cannot be divided by just 1 and 21,142,375, 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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