Q: Is 255,000 a Composite Number?

Why is 255,000 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 255,000 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 17 20 24 25 30 34 40 50 51 60 68 75 85 100 102 120 125 136 150 170 200 204 250 255 300 340 375 408 425 500 510 600 625 680 750 850 1,000 1,020 1,250 1,275 1,500 1,700 1,875 2,040 2,125 2,500 2,550 3,000 3,400 3,750 4,250 5,000 5,100 6,375 7,500 8,500 10,200 10,625 12,750 15,000 17,000 21,250 25,500 31,875 42,500 51,000 63,750 85,000 127,500 and 255,000, with no remainder.

Since 255,000 cannot be divided by just 1 and 255,000, 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).