Q: Is 421,015 a Prime Number?
A: No, 421,015 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 421015 can be evenly divided by 1 5 7 23 35 115 161 523 805 2,615 3,661 12,029 18,305 60,145 84,203 and 421,015, with no remainder.
Since 421,015 cannot be divided by just 1 and 421,015, it is not a prime number.