Q: Is 2,139,423 a Prime Number?
A: No, 2,139,423 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 2139423 can be evenly divided by 1 3 11 13 33 39 143 429 4,987 14,961 54,857 64,831 164,571 194,493 713,141 and 2,139,423, with no remainder.
Since 2,139,423 cannot be divided by just 1 and 2,139,423, it is not a prime number.