Q: Is 123,900 a Prime Number?
A: No, 123,900 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 123900 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 25 28 30 35 42 50 59 60 70 75 84 100 105 118 140 150 175 177 210 236 295 300 350 354 413 420 525 590 700 708 826 885 1,050 1,180 1,239 1,475 1,652 1,770 2,065 2,100 2,478 2,950 3,540 4,130 4,425 4,956 5,900 6,195 8,260 8,850 10,325 12,390 17,700 20,650 24,780 30,975 41,300 61,950 and 123,900, with no remainder.
Since 123,900 cannot be divided by just 1 and 123,900, it is not a prime number.