Q: Is 1,687,140 a Composite Number?

Why is 1,687,140 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 1,687,140 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 13 14 15 18 20 21 26 28 30 35 36 39 42 45 52 60 63 65 70 78 84 90 91 103 105 117 126 130 140 156 180 182 195 206 210 234 252 260 273 309 315 364 390 412 420 455 468 515 546 585 618 630 721 780 819 910 927 1,030 1,092 1,170 1,236 1,260 1,339 1,365 1,442 1,545 1,638 1,820 1,854 2,060 2,163 2,340 2,678 2,730 2,884 3,090 3,276 3,605 3,708 4,017 4,095 4,326 4,635 5,356 5,460 6,180 6,489 6,695 7,210 8,034 8,190 8,652 9,270 9,373 10,815 12,051 12,978 13,390 14,420 16,068 16,380 18,540 18,746 20,085 21,630 24,102 25,956 26,780 28,119 32,445 37,492 40,170 43,260 46,865 48,204 56,238 60,255 64,890 80,340 84,357 93,730 112,476 120,510 129,780 140,595 168,714 187,460 241,020 281,190 337,428 421,785 562,380 843,570 and 1,687,140, with no remainder.

Since 1,687,140 cannot be divided by just 1 and 1,687,140, 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).