Q: Is 7,781,715 a Composite Number?

Why is 7,781,715 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 7,781,715 can be evenly divided by 1 3 5 9 15 29 45 67 87 89 145 201 261 267 335 435 445 603 801 1,005 1,305 1,335 1,943 2,581 3,015 4,005 5,829 5,963 7,743 9,715 12,905 17,487 17,889 23,229 29,145 29,815 38,715 53,667 87,435 89,445 116,145 172,927 268,335 518,781 864,635 1,556,343 2,593,905 and 7,781,715, with no remainder.

Since 7,781,715 cannot be divided by just 1 and 7,781,715, 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).