Q: Is 312,400 a Composite Number?

Why is 312,400 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 312,400 can be evenly divided by 1 2 4 5 8 10 11 16 20 22 25 40 44 50 55 71 80 88 100 110 142 176 200 220 275 284 355 400 440 550 568 710 781 880 1,100 1,136 1,420 1,562 1,775 2,200 2,840 3,124 3,550 3,905 4,400 5,680 6,248 7,100 7,810 12,496 14,200 15,620 19,525 28,400 31,240 39,050 62,480 78,100 156,200 and 312,400, with no remainder.

Since 312,400 cannot be divided by just 1 and 312,400, 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).