Q: Is 121,121,217 a Prime Number?

 A: No, 121,121,217 is not a prime number.

Why is 121,121,217 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 121121217 can be evenly divided by 1 3 7 9 21 27 63 189 640,853 1,922,559 4,485,971 5,767,677 13,457,913 17,303,031 40,373,739 and 121,121,217, with no remainder.

Since 121,121,217 cannot be divided by just 1 and 121,121,217, it is not a prime number.


More Examples

Number 121,121,215121,121,216121,121,218121,121,219
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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