Q: Is 15,271,578 a Composite Number?

Why is 15,271,578 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 15,271,578 can be evenly divided by 1 2 3 6 7 9 14 18 21 27 42 54 63 67 81 126 134 162 189 201 243 378 402 469 486 567 603 938 1,134 1,206 1,407 1,701 1,809 2,814 3,402 3,618 4,221 4,489 5,427 8,442 8,978 10,854 12,663 13,467 16,281 25,326 26,934 31,423 32,562 37,989 40,401 62,846 75,978 80,802 94,269 113,967 121,203 188,538 227,934 242,406 282,807 363,609 565,614 727,218 848,421 1,090,827 1,696,842 2,181,654 2,545,263 5,090,526 7,635,789 and 15,271,578, with no remainder.

Since 15,271,578 cannot be divided by just 1 and 15,271,578, 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).