Q: Is 771,210 a Composite Number?

Why is 771,210 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 771,210 can be evenly divided by 1 2 3 5 6 9 10 11 15 18 19 22 30 33 38 41 45 55 57 66 82 90 95 99 110 114 123 165 171 190 198 205 209 246 285 330 342 369 410 418 451 495 570 615 627 738 779 855 902 990 1,045 1,230 1,254 1,353 1,558 1,710 1,845 1,881 2,090 2,255 2,337 2,706 3,135 3,690 3,762 3,895 4,059 4,510 4,674 6,270 6,765 7,011 7,790 8,118 8,569 9,405 11,685 13,530 14,022 17,138 18,810 20,295 23,370 25,707 35,055 40,590 42,845 51,414 70,110 77,121 85,690 128,535 154,242 257,070 385,605 and 771,210, with no remainder.

Since 771,210 cannot be divided by just 1 and 771,210, 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).