Q: Is 128,100 a Prime Number?
A: No, 128,100 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 128100 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 25 28 30 35 42 50 60 61 70 75 84 100 105 122 140 150 175 183 210 244 300 305 350 366 420 427 525 610 700 732 854 915 1,050 1,220 1,281 1,525 1,708 1,830 2,100 2,135 2,562 3,050 3,660 4,270 4,575 5,124 6,100 6,405 8,540 9,150 10,675 12,810 18,300 21,350 25,620 32,025 42,700 64,050 and 128,100, with no remainder.
Since 128,100 cannot be divided by just 1 and 128,100, it is not a prime number.