Q: Is 165,680 a Prime Number?
A: No, 165,680 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 165680 can be evenly divided by 1 2 4 5 8 10 16 19 20 38 40 76 80 95 109 152 190 218 304 380 436 545 760 872 1,090 1,520 1,744 2,071 2,180 4,142 4,360 8,284 8,720 10,355 16,568 20,710 33,136 41,420 82,840 and 165,680, with no remainder.
Since 165,680 cannot be divided by just 1 and 165,680, it is not a prime number.