Q: Is 81,678,080 a Composite Number?

Why is 81,678,080 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 81,678,080 can be evenly divided by 1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 80 88 110 128 160 176 220 256 320 352 440 640 704 880 1,280 1,408 1,760 2,816 3,520 5,801 7,040 11,602 14,080 23,204 29,005 46,408 58,010 63,811 92,816 116,020 127,622 185,632 232,040 255,244 319,055 371,264 464,080 510,488 638,110 742,528 928,160 1,020,976 1,276,220 1,485,056 1,856,320 2,041,952 2,552,440 3,712,640 4,083,904 5,104,880 7,425,280 8,167,808 10,209,760 16,335,616 20,419,520 40,839,040 and 81,678,080, with no remainder.

Since 81,678,080 cannot be divided by just 1 and 81,678,080, 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).