Q: Is 2,145,312 a Composite Number?

Why is 2,145,312 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 2,145,312 can be evenly divided by 1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 72 78 96 104 108 117 144 156 191 208 216 234 288 312 351 382 416 432 468 573 624 702 764 864 936 1,146 1,248 1,404 1,528 1,719 1,872 2,292 2,483 2,808 3,056 3,438 3,744 4,584 4,966 5,157 5,616 6,112 6,876 7,449 9,168 9,932 10,314 11,232 13,752 14,898 18,336 19,864 20,628 22,347 27,504 29,796 39,728 41,256 44,694 55,008 59,592 67,041 79,456 82,512 89,388 119,184 134,082 165,024 178,776 238,368 268,164 357,552 536,328 715,104 1,072,656 and 2,145,312, with no remainder.

Since 2,145,312 cannot be divided by just 1 and 2,145,312, 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).