Q: Is 128,400 a Composite Number?

Why is 128,400 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 128,400 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 40 48 50 60 75 80 100 107 120 150 200 214 240 300 321 400 428 535 600 642 856 1,070 1,200 1,284 1,605 1,712 2,140 2,568 2,675 3,210 4,280 5,136 5,350 6,420 8,025 8,560 10,700 12,840 16,050 21,400 25,680 32,100 42,800 64,200 and 128,400, with no remainder.

Since 128,400 cannot be divided by just 1 and 128,400, 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).