Q: Is 2,688,210 a Composite Number?

Why is 2,688,210 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 2,688,210 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 17 18 21 30 34 35 42 45 51 63 70 85 90 102 105 119 126 153 170 210 238 251 255 306 315 357 502 510 595 630 714 753 765 1,071 1,190 1,255 1,506 1,530 1,757 1,785 2,142 2,259 2,510 3,514 3,570 3,765 4,267 4,518 5,271 5,355 7,530 8,534 8,785 10,542 10,710 11,295 12,801 15,813 17,570 21,335 22,590 25,602 26,355 29,869 31,626 38,403 42,670 52,710 59,738 64,005 76,806 79,065 89,607 128,010 149,345 158,130 179,214 192,015 268,821 298,690 384,030 448,035 537,642 896,070 1,344,105 and 2,688,210, with no remainder.

Since 2,688,210 cannot be divided by just 1 and 2,688,210, 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).