Q: Is 3,121,340 a Prime Number?
A: No, 3,121,340 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 3121340 can be evenly divided by 1 2 4 5 10 20 239 478 653 956 1,195 1,306 2,390 2,612 3,265 4,780 6,530 13,060 156,067 312,134 624,268 780,335 1,560,670 and 3,121,340, with no remainder.
Since 3,121,340 cannot be divided by just 1 and 3,121,340, it is not a prime number.