Q: Is 421,923 a Prime Number?
A: No, 421,923 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 421923 can be evenly divided by 1 3 17 51 8,273 24,819 140,641 and 421,923, with no remainder.
Since 421,923 cannot be divided by just 1 and 421,923, it is not a prime number.