Q: Is 165,580 a Prime Number?
A: No, 165,580 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 165580 can be evenly divided by 1 2 4 5 10 17 20 34 68 85 170 340 487 974 1,948 2,435 4,870 8,279 9,740 16,558 33,116 41,395 82,790 and 165,580, with no remainder.
Since 165,580 cannot be divided by just 1 and 165,580, it is not a prime number.