Q: Is 128,820 a Prime Number?
A: No, 128,820 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 128820 can be evenly divided by 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 113 114 190 226 228 285 339 380 452 565 570 678 1,130 1,140 1,356 1,695 2,147 2,260 3,390 4,294 6,441 6,780 8,588 10,735 12,882 21,470 25,764 32,205 42,940 64,410 and 128,820, with no remainder.
Since 128,820 cannot be divided by just 1 and 128,820, it is not a prime number.