Q: Is 20,201,445 a Composite Number?

Why is 20,201,445 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 20,201,445 can be evenly divided by 1 3 5 9 11 15 33 37 45 55 99 111 165 185 333 407 495 555 1,103 1,221 1,665 2,035 3,309 3,663 5,515 6,105 9,927 12,133 16,545 18,315 36,399 40,811 49,635 60,665 109,197 122,433 181,995 204,055 367,299 448,921 545,985 612,165 1,346,763 1,836,495 2,244,605 4,040,289 6,733,815 and 20,201,445, with no remainder.

Since 20,201,445 cannot be divided by just 1 and 20,201,445, 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).