Q: Is 8,127,405 a Composite Number?

Why is 8,127,405 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 8,127,405 can be evenly divided by 1 3 5 9 11 13 15 27 33 39 45 55 65 99 117 135 143 165 195 297 351 421 429 495 585 715 1,263 1,287 1,485 1,755 2,105 2,145 3,789 3,861 4,631 5,473 6,315 6,435 11,367 13,893 16,419 18,945 19,305 23,155 27,365 41,679 49,257 56,835 60,203 69,465 82,095 125,037 147,771 180,609 208,395 246,285 301,015 541,827 625,185 738,855 903,045 1,625,481 2,709,135 and 8,127,405, with no remainder.

Since 8,127,405 cannot be divided by just 1 and 8,127,405, 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).