Q: Is 3,121,888 a Composite Number?

Why is 3,121,888 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 3,121,888 can be evenly divided by 1 2 4 7 8 11 14 16 22 28 32 44 49 56 77 88 98 112 154 176 181 196 224 308 352 362 392 539 616 724 784 1,078 1,232 1,267 1,448 1,568 1,991 2,156 2,464 2,534 2,896 3,982 4,312 5,068 5,792 7,964 8,624 8,869 10,136 13,937 15,928 17,248 17,738 20,272 27,874 31,856 35,476 40,544 55,748 63,712 70,952 97,559 111,496 141,904 195,118 222,992 283,808 390,236 445,984 780,472 1,560,944 and 3,121,888, with no remainder.

Since 3,121,888 cannot be divided by just 1 and 3,121,888, 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).