Q: Is 6,426,221 a Prime Number?
A: No, 6,426,221 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 6426221 can be evenly divided by 1 17 43 59 149 731 1,003 2,533 2,537 6,407 8,791 43,129 108,919 149,447 378,013 and 6,426,221, with no remainder.
Since 6,426,221 cannot be divided by just 1 and 6,426,221, it is not a prime number.