Q: Is 128,310 a Composite Number?

Why is 128,310 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 128,310 can be evenly divided by 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 47 65 70 78 91 94 105 130 141 182 195 210 235 273 282 329 390 455 470 546 611 658 705 910 987 1,222 1,365 1,410 1,645 1,833 1,974 2,730 3,055 3,290 3,666 4,277 4,935 6,110 8,554 9,165 9,870 12,831 18,330 21,385 25,662 42,770 64,155 and 128,310, with no remainder.

Since 128,310 cannot be divided by just 1 and 128,310, 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).