Q: Is 266,660 a Prime Number?
A: No, 266,660 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 266660 can be evenly divided by 1 2 4 5 10 20 67 134 199 268 335 398 670 796 995 1,340 1,990 3,980 13,333 26,666 53,332 66,665 133,330 and 266,660, with no remainder.
Since 266,660 cannot be divided by just 1 and 266,660, it is not a prime number.