Q: Is 121,121,155 a Prime Number?

 A: No, 121,121,155 is not a prime number.

Why is 121,121,155 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 121121155 can be evenly divided by 1 5 2,029 10,145 11,939 59,695 24,224,231 and 121,121,155, with no remainder.

Since 121,121,155 cannot be divided by just 1 and 121,121,155, it is not a prime number.


More Examples

Number 121,121,153121,121,154121,121,156121,121,157
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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