Q: Is 155,040 a Composite Number?

Why is 155,040 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 155,040 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 17 19 20 24 30 32 34 38 40 48 51 57 60 68 76 80 85 95 96 102 114 120 136 152 160 170 190 204 228 240 255 272 285 304 323 340 380 408 456 480 510 544 570 608 646 680 760 816 912 969 1,020 1,140 1,292 1,360 1,520 1,615 1,632 1,824 1,938 2,040 2,280 2,584 2,720 3,040 3,230 3,876 4,080 4,560 4,845 5,168 6,460 7,752 8,160 9,120 9,690 10,336 12,920 15,504 19,380 25,840 31,008 38,760 51,680 77,520 and 155,040, with no remainder.

Since 155,040 cannot be divided by just 1 and 155,040, 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).