Q: Is 1,561,716 a Composite Number?

Why is 1,561,716 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 1,561,716 can be evenly divided by 1 2 3 4 6 9 12 13 18 26 36 39 47 52 71 78 94 117 141 142 156 188 213 234 282 284 423 426 468 564 611 639 846 852 923 1,222 1,278 1,692 1,833 1,846 2,444 2,556 2,769 3,337 3,666 3,692 5,499 5,538 6,674 7,332 8,307 10,011 10,998 11,076 13,348 16,614 20,022 21,996 30,033 33,228 40,044 43,381 60,066 86,762 120,132 130,143 173,524 260,286 390,429 520,572 780,858 and 1,561,716, with no remainder.

Since 1,561,716 cannot be divided by just 1 and 1,561,716, 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).