Q: Is 7,781,600 a Composite Number?

Why is 7,781,600 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 7,781,600 can be evenly divided by 1 2 4 5 8 10 16 20 25 32 40 50 71 80 100 137 142 160 200 274 284 355 400 548 568 685 710 800 1,096 1,136 1,370 1,420 1,775 2,192 2,272 2,740 2,840 3,425 3,550 4,384 5,480 5,680 6,850 7,100 9,727 10,960 11,360 13,700 14,200 19,454 21,920 27,400 28,400 38,908 48,635 54,800 56,800 77,816 97,270 109,600 155,632 194,540 243,175 311,264 389,080 486,350 778,160 972,700 1,556,320 1,945,400 3,890,800 and 7,781,600, with no remainder.

Since 7,781,600 cannot be divided by just 1 and 7,781,600, 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).