Q: Is 166,820 a Prime Number?
A: No, 166,820 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 166820 can be evenly divided by 1 2 4 5 10 19 20 38 76 95 190 380 439 878 1,756 2,195 4,390 8,341 8,780 16,682 33,364 41,705 83,410 and 166,820, with no remainder.
Since 166,820 cannot be divided by just 1 and 166,820, it is not a prime number.