Q: Is 21,460,530 a Composite Number?

Why is 21,460,530 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 21,460,530 can be evenly divided by 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 49 65 70 78 91 98 105 130 147 182 195 210 245 273 294 390 455 490 546 637 735 910 1,123 1,274 1,365 1,470 1,911 2,246 2,730 3,185 3,369 3,822 5,615 6,370 6,738 7,861 9,555 11,230 14,599 15,722 16,845 19,110 23,583 29,198 33,690 39,305 43,797 47,166 55,027 72,995 78,610 87,594 102,193 110,054 117,915 145,990 165,081 204,386 218,985 235,830 275,135 306,579 330,162 437,970 510,965 550,270 613,158 715,351 825,405 1,021,930 1,430,702 1,532,895 1,650,810 2,146,053 3,065,790 3,576,755 4,292,106 7,153,510 10,730,265 and 21,460,530, with no remainder.

Since 21,460,530 cannot be divided by just 1 and 21,460,530, 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).