Q: Is 521,730 a Composite Number?

Why is 521,730 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 521,730 can be evenly divided by 1 2 3 5 6 9 10 11 15 17 18 22 30 31 33 34 45 51 55 62 66 85 90 93 99 102 110 153 155 165 170 186 187 198 255 279 306 310 330 341 374 465 495 510 527 558 561 682 765 930 935 990 1,023 1,054 1,122 1,395 1,530 1,581 1,683 1,705 1,870 2,046 2,635 2,790 2,805 3,069 3,162 3,366 3,410 4,743 5,115 5,270 5,610 5,797 6,138 7,905 8,415 9,486 10,230 11,594 15,345 15,810 16,830 17,391 23,715 28,985 30,690 34,782 47,430 52,173 57,970 86,955 104,346 173,910 260,865 and 521,730, with no remainder.

Since 521,730 cannot be divided by just 1 and 521,730, 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).