Q: Is 1,420,005 a Prime Number?

 A: No, 1,420,005 is not a prime number.

Why is 1,420,005 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 1420005 can be evenly divided by 1 3 5 15 137 411 685 691 2,055 2,073 3,455 10,365 94,667 284,001 473,335 and 1,420,005, with no remainder.

Since 1,420,005 cannot be divided by just 1 and 1,420,005, it is not a prime number.


More Examples

Number 1,420,0031,420,0041,420,0061,420,007
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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