Q: Is 1,251,720 a Composite Number?

Why is 1,251,720 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 1,251,720 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 19 20 24 27 30 36 38 40 45 54 57 60 61 72 76 90 95 108 114 120 122 135 152 171 180 183 190 216 228 244 270 285 305 342 360 366 380 456 488 513 540 549 570 610 684 732 760 855 915 1,026 1,080 1,098 1,140 1,159 1,220 1,368 1,464 1,647 1,710 1,830 2,052 2,196 2,280 2,318 2,440 2,565 2,745 3,294 3,420 3,477 3,660 4,104 4,392 4,636 5,130 5,490 5,795 6,588 6,840 6,954 7,320 8,235 9,272 10,260 10,431 10,980 11,590 13,176 13,908 16,470 17,385 20,520 20,862 21,960 23,180 27,816 31,293 32,940 34,770 41,724 46,360 52,155 62,586 65,880 69,540 83,448 104,310 125,172 139,080 156,465 208,620 250,344 312,930 417,240 625,860 and 1,251,720, with no remainder.

Since 1,251,720 cannot be divided by just 1 and 1,251,720, 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).