Q: Is 65,420,775 a Composite Number?

Why is 65,420,775 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 65,420,775 can be evenly divided by 1 3 5 7 9 15 21 25 35 45 63 73 75 105 175 219 225 315 365 511 525 569 657 1,095 1,533 1,575 1,707 1,825 2,555 2,845 3,285 3,983 4,599 5,121 5,475 7,665 8,535 11,949 12,775 14,225 16,425 19,915 22,995 25,605 35,847 38,325 41,537 42,675 59,745 99,575 114,975 124,611 128,025 179,235 207,685 290,759 298,725 373,833 623,055 872,277 896,175 1,038,425 1,453,795 1,869,165 2,616,831 3,115,275 4,361,385 7,268,975 9,345,825 13,084,155 21,806,925 and 65,420,775, with no remainder.

Since 65,420,775 cannot be divided by just 1 and 65,420,775, 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).