Q: Is 420,421,425 a Prime Number?

 A: No, 420,421,425 is not a prime number.

Why is 420,421,425 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 420421425 can be evenly divided by 1 3 5 15 25 75 5,605,619 16,816,857 28,028,095 84,084,285 140,140,475 and 420,421,425, with no remainder.

Since 420,421,425 cannot be divided by just 1 and 420,421,425, it is not a prime number.


More Examples

Number 420,421,423420,421,424420,421,426420,421,427
Prime? yesnonoyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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