Q: Is 1,818,180 a Composite Number?

Why is 1,818,180 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 1,818,180 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 13 14 15 18 20 21 26 27 28 30 35 36 37 39 42 45 52 54 60 63 65 70 74 78 84 90 91 105 108 111 117 126 130 135 140 148 156 180 182 185 189 195 210 222 234 252 259 260 270 273 315 333 351 364 370 378 390 420 444 455 468 481 518 540 546 555 585 630 666 702 740 756 777 780 819 910 945 962 999 1,036 1,092 1,110 1,170 1,260 1,295 1,332 1,365 1,404 1,443 1,554 1,638 1,665 1,755 1,820 1,890 1,924 1,998 2,220 2,331 2,340 2,405 2,457 2,590 2,730 2,886 3,108 3,276 3,330 3,367 3,510 3,780 3,885 3,996 4,095 4,329 4,662 4,810 4,914 4,995 5,180 5,460 5,772 6,660 6,734 6,993 7,020 7,215 7,770 8,190 8,658 9,324 9,620 9,828 9,990 10,101 11,655 12,285 12,987 13,468 13,986 14,430 15,540 16,380 16,835 17,316 19,980 20,202 21,645 23,310 24,570 25,974 27,972 28,860 30,303 33,670 34,965 40,404 43,290 46,620 49,140 50,505 51,948 60,606 64,935 67,340 69,930 86,580 90,909 101,010 121,212 129,870 139,860 151,515 181,818 202,020 259,740 303,030 363,636 454,545 606,060 909,090 and 1,818,180, with no remainder.

Since 1,818,180 cannot be divided by just 1 and 1,818,180, 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).