Q: Is 21,201,140 a Composite Number?

Why is 21,201,140 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 21,201,140 can be evenly divided by 1 2 4 5 10 20 197 394 788 985 1,970 3,940 5,381 10,762 21,524 26,905 53,810 107,620 1,060,057 2,120,114 4,240,228 5,300,285 10,600,570 and 21,201,140, with no remainder.

Since 21,201,140 cannot be divided by just 1 and 21,201,140, 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).