Q: Is 1,200,021 a Prime Number?

 A: No, 1,200,021 is not a prime number.

Why is 1,200,021 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 1200021 can be evenly divided by 1 3 19 37 57 111 569 703 1,707 2,109 10,811 21,053 32,433 63,159 400,007 and 1,200,021, with no remainder.

Since 1,200,021 cannot be divided by just 1 and 1,200,021, it is not a prime number.


More Examples

Number 1,200,0191,200,0201,200,0221,200,023
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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