Q: Is 661,320 a Composite Number?

Why is 661,320 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 661,320 can be evenly divided by 1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 30 33 36 40 44 45 55 60 66 72 88 90 99 110 120 132 165 167 180 198 220 264 330 334 360 396 440 495 501 660 668 792 835 990 1,002 1,320 1,336 1,503 1,670 1,837 1,980 2,004 2,505 3,006 3,340 3,674 3,960 4,008 5,010 5,511 6,012 6,680 7,348 7,515 9,185 10,020 11,022 12,024 14,696 15,030 16,533 18,370 20,040 22,044 27,555 30,060 33,066 36,740 44,088 55,110 60,120 66,132 73,480 82,665 110,220 132,264 165,330 220,440 330,660 and 661,320, with no remainder.

Since 661,320 cannot be divided by just 1 and 661,320, 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).