Q: Is 766,221 a Prime Number?
A: No, 766,221 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 766221 can be evenly divided by 1 3 53 61 79 159 183 237 3,233 4,187 4,819 9,699 12,561 14,457 255,407 and 766,221, with no remainder.
Since 766,221 cannot be divided by just 1 and 766,221, it is not a prime number.