Q: Is 3,121,920 a Composite Number?

Why is 3,121,920 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 3,121,920 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 128 144 160 180 192 240 256 271 288 320 360 384 480 542 576 640 720 768 813 960 1,084 1,152 1,280 1,355 1,440 1,626 1,920 2,168 2,304 2,439 2,710 2,880 3,252 3,840 4,065 4,336 4,878 5,420 5,760 6,504 8,130 8,672 9,756 10,840 11,520 12,195 13,008 16,260 17,344 19,512 21,680 24,390 26,016 32,520 34,688 39,024 43,360 48,780 52,032 65,040 69,376 78,048 86,720 97,560 104,064 130,080 156,096 173,440 195,120 208,128 260,160 312,192 346,880 390,240 520,320 624,384 780,480 1,040,640 1,560,960 and 3,121,920, with no remainder.

Since 3,121,920 cannot be divided by just 1 and 3,121,920, 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).