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

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

Why is 121,121,121 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 121121121 can be evenly divided by 1 3 11 33 121 363 333,667 1,001,001 3,670,337 11,011,011 40,373,707 and 121,121,121, with no remainder.

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


More Examples

Number 121,121,119121,121,120121,121,122121,121,123
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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