Q: Is 7,681,280 a Composite Number?

Why is 7,681,280 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 7,681,280 can be evenly divided by 1 2 4 5 8 10 16 17 20 32 34 40 64 68 80 85 128 136 160 170 256 272 320 340 353 544 640 680 706 1,088 1,280 1,360 1,412 1,765 2,176 2,720 2,824 3,530 4,352 5,440 5,648 6,001 7,060 10,880 11,296 12,002 14,120 21,760 22,592 24,004 28,240 30,005 45,184 48,008 56,480 60,010 90,368 96,016 112,960 120,020 192,032 225,920 240,040 384,064 451,840 480,080 768,128 960,160 1,536,256 1,920,320 3,840,640 and 7,681,280, with no remainder.

Since 7,681,280 cannot be divided by just 1 and 7,681,280, 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).