Q: Is 121,221,015 a Prime Number?

 A: No, 121,221,015 is not a prime number.

Why is 121,221,015 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 121221015 can be evenly divided by 1 3 5 15 29 87 145 191 435 573 955 1,459 2,865 4,377 5,539 7,295 16,617 21,885 27,695 42,311 83,085 126,933 211,555 278,669 634,665 836,007 1,393,345 4,180,035 8,081,401 24,244,203 40,407,005 and 121,221,015, with no remainder.

Since 121,221,015 cannot be divided by just 1 and 121,221,015, it is not a prime number.


More Examples

Number 121,221,013121,221,014121,221,016121,221,017
Prime? yesnonono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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