Q: Is 1,312,640 a Composite Number?

Why is 1,312,640 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 1,312,640 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 280 293 320 448 560 586 640 896 1,120 1,172 1,465 2,051 2,240 2,344 2,930 4,102 4,480 4,688 5,860 8,204 9,376 10,255 11,720 16,408 18,752 20,510 23,440 32,816 37,504 41,020 46,880 65,632 82,040 93,760 131,264 164,080 187,520 262,528 328,160 656,320 and 1,312,640, with no remainder.

Since 1,312,640 cannot be divided by just 1 and 1,312,640, 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).