Q: Is 18,718,700 a Composite Number?

Why is 18,718,700 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 18,718,700 can be evenly divided by 1 2 4 5 7 10 11 13 14 17 20 22 25 26 28 34 35 44 50 52 55 65 68 70 77 85 91 100 110 119 121 130 140 143 154 170 175 182 187 220 221 238 242 260 275 286 308 325 340 350 364 374 385 425 442 455 476 484 550 572 595 605 650 700 715 748 770 847 850 884 910 935 1,001 1,100 1,105 1,190 1,210 1,300 1,309 1,430 1,540 1,547 1,573 1,694 1,700 1,820 1,870 1,925 2,002 2,057 2,210 2,275 2,380 2,420 2,431 2,618 2,860 2,975 3,025 3,094 3,146 3,388 3,575 3,740 3,850 4,004 4,114 4,235 4,420 4,550 4,675 4,862 5,005 5,236 5,525 5,950 6,050 6,188 6,292 6,545 7,150 7,700 7,735 7,865 8,228 8,470 9,100 9,350 9,724 10,010 10,285 11,011 11,050 11,900 12,100 12,155 13,090 14,300 14,399 15,470 15,730 16,940 17,017 18,700 20,020 20,570 21,175 22,022 22,100 24,310 25,025 26,180 26,741 28,798 30,940 31,460 32,725 34,034 38,675 39,325 41,140 42,350 44,044 48,620 50,050 51,425 53,482 55,055 57,596 60,775 65,450 68,068 71,995 77,350 78,650 84,700 85,085 100,100 102,850 106,964 110,110 121,550 130,900 133,705 143,990 154,700 157,300 170,170 187,187 205,700 220,220 243,100 267,410 275,275 287,980 340,340 359,975 374,374 425,425 534,820 550,550 668,525 719,950 748,748 850,850 935,935 1,101,100 1,337,050 1,439,900 1,701,700 1,871,870 2,674,100 3,743,740 4,679,675 9,359,350 and 18,718,700, with no remainder.

Since 18,718,700 cannot be divided by just 1 and 18,718,700, 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).