Q: Is 21,373,968 a Composite Number?

Why is 21,373,968 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 21,373,968 can be evenly divided by 1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 33 42 44 48 56 66 77 84 88 112 132 154 168 176 231 264 308 336 462 528 616 924 1,232 1,848 3,696 5,783 11,566 17,349 23,132 34,698 40,481 46,264 63,613 69,396 80,962 92,528 121,443 127,226 138,792 161,924 190,839 242,886 254,452 277,584 323,848 381,678 445,291 485,772 508,904 647,696 763,356 890,582 971,544 1,017,808 1,335,873 1,526,712 1,781,164 1,943,088 2,671,746 3,053,424 3,562,328 5,343,492 7,124,656 10,686,984 and 21,373,968, with no remainder.

Since 21,373,968 cannot be divided by just 1 and 21,373,968, 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).