Q: Is 666,120 a Prime Number?
A: No, 666,120 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 666120 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 13 14 15 20 21 24 26 28 30 35 39 40 42 52 56 60 61 65 70 78 84 91 104 105 120 122 130 140 156 168 182 183 195 210 244 260 273 280 305 312 364 366 390 420 427 455 488 520 546 610 728 732 780 793 840 854 910 915 1,092 1,220 1,281 1,365 1,464 1,560 1,586 1,708 1,820 1,830 2,135 2,184 2,379 2,440 2,562 2,730 3,172 3,416 3,640 3,660 3,965 4,270 4,758 5,124 5,460 5,551 6,344 6,405 7,320 7,930 8,540 9,516 10,248 10,920 11,102 11,895 12,810 15,860 16,653 17,080 19,032 22,204 23,790 25,620 27,755 31,720 33,306 44,408 47,580 51,240 55,510 66,612 83,265 95,160 111,020 133,224 166,530 222,040 333,060 and 666,120, with no remainder.
Since 666,120 cannot be divided by just 1 and 666,120, it is not a prime number.