Q: Is 855,855 a Composite Number?

Why is 855,855 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 855,855 can be evenly divided by 1 3 5 7 9 11 13 15 19 21 33 35 39 45 55 57 63 65 77 91 95 99 105 117 133 143 165 171 195 209 231 247 273 285 315 385 399 429 455 495 585 627 665 693 715 741 819 855 1,001 1,045 1,155 1,197 1,235 1,287 1,365 1,463 1,729 1,881 1,995 2,145 2,223 2,717 3,003 3,135 3,465 3,705 4,095 4,389 5,005 5,187 5,985 6,435 7,315 8,151 8,645 9,009 9,405 11,115 13,167 13,585 15,015 15,561 19,019 21,945 24,453 25,935 40,755 45,045 57,057 65,835 77,805 95,095 122,265 171,171 285,285 and 855,855, with no remainder.

Since 855,855 cannot be divided by just 1 and 855,855, 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).