Q: Is 1,821,435 a Composite Number?

Why is 1,821,435 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 1,821,435 can be evenly divided by 1 3 5 7 11 15 19 21 33 35 55 57 77 83 95 105 133 165 209 231 249 285 385 399 415 581 627 665 913 1,045 1,155 1,245 1,463 1,577 1,743 1,995 2,739 2,905 3,135 4,389 4,565 4,731 6,391 7,315 7,885 8,715 11,039 13,695 17,347 19,173 21,945 23,655 31,955 33,117 52,041 55,195 86,735 95,865 121,429 165,585 260,205 364,287 607,145 and 1,821,435, with no remainder.

Since 1,821,435 cannot be divided by just 1 and 1,821,435, 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).