Q: Is 1,531,530 a Composite Number?

Why is 1,531,530 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 1,531,530 can be evenly divided by 1 2 3 5 6 7 9 10 11 13 14 15 17 18 21 22 26 30 33 34 35 39 42 45 51 55 63 65 66 70 77 78 85 90 91 99 102 105 110 117 119 126 130 143 153 154 165 170 182 187 195 198 210 221 231 234 238 255 273 286 306 315 330 357 374 385 390 429 442 455 462 495 510 546 561 585 595 630 663 693 714 715 765 770 819 858 910 935 990 1,001 1,071 1,105 1,122 1,155 1,170 1,190 1,287 1,309 1,326 1,365 1,386 1,430 1,530 1,547 1,638 1,683 1,785 1,870 1,989 2,002 2,142 2,145 2,210 2,310 2,431 2,574 2,618 2,730 2,805 3,003 3,094 3,315 3,366 3,465 3,570 3,927 3,978 4,095 4,290 4,641 4,862 5,005 5,355 5,610 6,006 6,435 6,545 6,630 6,930 7,293 7,735 7,854 8,190 8,415 9,009 9,282 9,945 10,010 10,710 11,781 12,155 12,870 13,090 13,923 14,586 15,015 15,470 16,830 17,017 18,018 19,635 19,890 21,879 23,205 23,562 24,310 27,846 30,030 34,034 36,465 39,270 43,758 45,045 46,410 51,051 58,905 69,615 72,930 85,085 90,090 102,102 109,395 117,810 139,230 153,153 170,170 218,790 255,255 306,306 510,510 765,765 and 1,531,530, with no remainder.

Since 1,531,530 cannot be divided by just 1 and 1,531,530, 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).