Q: Is 21,751,500 a Composite Number?

Why is 21,751,500 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 21,751,500 can be evenly divided by 1 2 3 4 5 6 10 12 15 17 20 25 30 34 50 51 60 68 75 85 100 102 125 150 170 204 250 255 300 340 375 425 500 510 750 850 853 1,020 1,275 1,500 1,700 1,706 2,125 2,550 2,559 3,412 4,250 4,265 5,100 5,118 6,375 8,500 8,530 10,236 12,750 12,795 14,501 17,060 21,325 25,500 25,590 29,002 42,650 43,503 51,180 58,004 63,975 72,505 85,300 87,006 106,625 127,950 145,010 174,012 213,250 217,515 255,900 290,020 319,875 362,525 426,500 435,030 639,750 725,050 870,060 1,087,575 1,279,500 1,450,100 1,812,625 2,175,150 3,625,250 4,350,300 5,437,875 7,250,500 10,875,750 and 21,751,500, with no remainder.

Since 21,751,500 cannot be divided by just 1 and 21,751,500, 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).