Q: Is 166,408 a Prime Number?
A: No, 166,408 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 166408 can be evenly divided by 1 2 4 8 11 22 31 44 61 62 88 122 124 244 248 341 488 671 682 1,342 1,364 1,891 2,684 2,728 3,782 5,368 7,564 15,128 20,801 41,602 83,204 and 166,408, with no remainder.
Since 166,408 cannot be divided by just 1 and 166,408, it is not a prime number.