Q: Is 279,840 a Composite Number?

Why is 279,840 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 279,840 can be evenly divided by 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 53 55 60 66 80 88 96 106 110 120 132 159 160 165 176 212 220 240 264 265 318 330 352 424 440 480 528 530 583 636 660 795 848 880 1,056 1,060 1,166 1,272 1,320 1,590 1,696 1,749 1,760 2,120 2,332 2,544 2,640 2,915 3,180 3,498 4,240 4,664 5,088 5,280 5,830 6,360 6,996 8,480 8,745 9,328 11,660 12,720 13,992 17,490 18,656 23,320 25,440 27,984 34,980 46,640 55,968 69,960 93,280 139,920 and 279,840, with no remainder.

Since 279,840 cannot be divided by just 1 and 279,840, 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).