Q: Is 66,666 a Prime Number?
A: No, 66,666 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 66666 can be evenly divided by 1 2 3 6 41 82 123 246 271 542 813 1,626 11,111 22,222 33,333 and 66,666, with no remainder.
Since 66,666 cannot be divided by just 1 and 66,666, it is not a prime number.