Q: Is 2,157,426 a Prime Number?
A: No, 2,157,426 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 2157426 can be evenly divided by 1 2 3 6 9 18 29 58 87 174 261 522 4,133 8,266 12,399 24,798 37,197 74,394 119,857 239,714 359,571 719,142 1,078,713 and 2,157,426, with no remainder.
Since 2,157,426 cannot be divided by just 1 and 2,157,426, it is not a prime number.