Q: Is 851,240 a Prime Number?
A: No, 851,240 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 851240 can be evenly divided by 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 1,637 3,274 6,548 8,185 13,096 16,370 21,281 32,740 42,562 65,480 85,124 106,405 170,248 212,810 425,620 and 851,240, with no remainder.
Since 851,240 cannot be divided by just 1 and 851,240, it is not a prime number.