Q: Is 1,621,312 a Composite Number?

Why is 1,621,312 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 1,621,312 can be evenly divided by 1 2 4 7 8 11 14 16 22 28 32 44 47 49 56 64 77 88 94 98 112 154 176 188 196 224 308 329 352 376 392 448 517 539 616 658 704 752 784 1,034 1,078 1,232 1,316 1,504 1,568 2,068 2,156 2,303 2,464 2,632 3,008 3,136 3,619 4,136 4,312 4,606 4,928 5,264 7,238 8,272 8,624 9,212 10,528 14,476 16,544 17,248 18,424 21,056 25,333 28,952 33,088 34,496 36,848 50,666 57,904 73,696 101,332 115,808 147,392 202,664 231,616 405,328 810,656 and 1,621,312, with no remainder.

Since 1,621,312 cannot be divided by just 1 and 1,621,312, 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).