Q: Is 1,215,450 a Composite Number?

Why is 1,215,450 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 1,215,450 can be evenly divided by 1 2 3 5 6 9 10 15 18 25 30 37 45 50 73 74 75 90 111 146 150 185 219 222 225 333 365 370 438 450 555 657 666 730 925 1,095 1,110 1,314 1,665 1,825 1,850 2,190 2,701 2,775 3,285 3,330 3,650 5,402 5,475 5,550 6,570 8,103 8,325 10,950 13,505 16,206 16,425 16,650 24,309 27,010 32,850 40,515 48,618 67,525 81,030 121,545 135,050 202,575 243,090 405,150 607,725 and 1,215,450, with no remainder.

Since 1,215,450 cannot be divided by just 1 and 1,215,450, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).