Q: Is 21,125,136 a Composite Number?

Why is 21,125,136 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 21,125,136 can be evenly divided by 1 2 3 4 6 8 12 16 24 31 48 62 93 124 186 248 372 496 744 1,488 14,197 28,394 42,591 56,788 85,182 113,576 170,364 227,152 340,728 440,107 681,456 880,214 1,320,321 1,760,428 2,640,642 3,520,856 5,281,284 7,041,712 10,562,568 and 21,125,136, with no remainder.

Since 21,125,136 cannot be divided by just 1 and 21,125,136, 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).