Q: Is 2,168,775 a Composite Number?

Why is 2,168,775 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 2,168,775 can be evenly divided by 1 3 5 7 9 15 17 21 25 27 35 45 51 63 75 81 85 105 119 135 153 175 189 225 243 255 315 357 405 425 459 525 567 595 675 729 765 945 1,071 1,215 1,275 1,377 1,575 1,701 1,785 2,025 2,295 2,835 2,975 3,213 3,645 3,825 4,131 4,725 5,103 5,355 6,075 6,885 8,505 8,925 9,639 11,475 12,393 14,175 16,065 18,225 20,655 25,515 26,775 28,917 34,425 42,525 48,195 61,965 80,325 86,751 103,275 127,575 144,585 240,975 309,825 433,755 722,925 and 2,168,775, with no remainder.

Since 2,168,775 cannot be divided by just 1 and 2,168,775, 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).