Q: Is 161,280 a Composite Number?

Why is 161,280 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 161,280 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 63 64 70 72 80 84 90 96 105 112 120 126 128 140 144 160 168 180 192 210 224 240 252 256 280 288 315 320 336 360 384 420 448 480 504 512 560 576 630 640 672 720 768 840 896 960 1,008 1,120 1,152 1,260 1,280 1,344 1,440 1,536 1,680 1,792 1,920 2,016 2,240 2,304 2,520 2,560 2,688 2,880 3,360 3,584 3,840 4,032 4,480 4,608 5,040 5,376 5,760 6,720 7,680 8,064 8,960 10,080 10,752 11,520 13,440 16,128 17,920 20,160 23,040 26,880 32,256 40,320 53,760 80,640 and 161,280, with no remainder.

Since 161,280 cannot be divided by just 1 and 161,280, 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).