Q: Is 421,088 a Prime Number?
A: No, 421,088 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 421088 can be evenly divided by 1 2 4 8 16 32 13,159 26,318 52,636 105,272 210,544 and 421,088, with no remainder.
Since 421,088 cannot be divided by just 1 and 421,088, it is not a prime number.