Q: Is 2,128,455 a Composite Number?

Why is 2,128,455 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 2,128,455 can be evenly divided by 1 3 5 7 9 15 21 29 35 45 63 87 105 145 203 233 261 315 435 609 699 1,015 1,165 1,305 1,631 1,827 2,097 3,045 3,495 4,893 6,757 8,155 9,135 10,485 14,679 20,271 24,465 33,785 47,299 60,813 73,395 101,355 141,897 236,495 304,065 425,691 709,485 and 2,128,455, with no remainder.

Since 2,128,455 cannot be divided by just 1 and 2,128,455, 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).