Q: Is 639,000 a Composite Number?

Why is 639,000 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 639,000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 30 36 40 45 50 60 71 72 75 90 100 120 125 142 150 180 200 213 225 250 284 300 355 360 375 426 450 500 568 600 639 710 750 852 900 1,000 1,065 1,125 1,278 1,420 1,500 1,704 1,775 1,800 2,130 2,250 2,556 2,840 3,000 3,195 3,550 4,260 4,500 5,112 5,325 6,390 7,100 8,520 8,875 9,000 10,650 12,780 14,200 15,975 17,750 21,300 25,560 26,625 31,950 35,500 42,600 53,250 63,900 71,000 79,875 106,500 127,800 159,750 213,000 319,500 and 639,000, with no remainder.

Since 639,000 cannot be divided by just 1 and 639,000, 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).