Q: Is 15,545,772 a Composite Number?

Why is 15,545,772 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 15,545,772 can be evenly divided by 1 2 3 4 6 9 11 12 18 22 33 36 37 44 66 74 99 111 132 148 198 222 333 396 407 444 666 814 1,061 1,221 1,332 1,628 2,122 2,442 3,183 3,663 4,244 4,884 6,366 7,326 9,549 11,671 12,732 14,652 19,098 23,342 35,013 38,196 39,257 46,684 70,026 78,514 105,039 117,771 140,052 157,028 210,078 235,542 353,313 420,156 431,827 471,084 706,626 863,654 1,295,481 1,413,252 1,727,308 2,590,962 3,886,443 5,181,924 7,772,886 and 15,545,772, with no remainder.

Since 15,545,772 cannot be divided by just 1 and 15,545,772, 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).