Q: Is 1,231,155 a Composite Number?

 A: Yes, 1,231,155 is a composite number.

Why is 1,231,155 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 1,231,155 can be evenly divided by 1 3 5 9 15 45 109 251 327 545 753 981 1,255 1,635 2,259 3,765 4,905 11,295 27,359 82,077 136,795 246,231 410,385 and 1,231,155, with no remainder.

Since 1,231,155 cannot be divided by just 1 and 1,231,155, it is a composite number.


More Examples

Number 1,231,1531,231,1541,231,1561,231,157
Composite? yesyesyesyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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