Q: Is 128,700 a Prime Number?
A: No, 128,700 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 128700 can be evenly divided by 1 2 3 4 5 6 9 10 11 12 13 15 18 20 22 25 26 30 33 36 39 44 45 50 52 55 60 65 66 75 78 90 99 100 110 117 130 132 143 150 156 165 180 195 198 220 225 234 260 275 286 300 325 330 390 396 429 450 468 495 550 572 585 650 660 715 780 825 858 900 975 990 1,100 1,170 1,287 1,300 1,430 1,650 1,716 1,950 1,980 2,145 2,340 2,475 2,574 2,860 2,925 3,300 3,575 3,900 4,290 4,950 5,148 5,850 6,435 7,150 8,580 9,900 10,725 11,700 12,870 14,300 21,450 25,740 32,175 42,900 64,350 and 128,700, with no remainder.
Since 128,700 cannot be divided by just 1 and 128,700, it is not a prime number.