Q: Is 171,820 a Prime Number?
A: No, 171,820 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 171820 can be evenly divided by 1 2 4 5 10 11 20 22 44 55 71 110 121 142 220 242 284 355 484 605 710 781 1,210 1,420 1,562 2,420 3,124 3,905 7,810 8,591 15,620 17,182 34,364 42,955 85,910 and 171,820, with no remainder.
Since 171,820 cannot be divided by just 1 and 171,820, it is not a prime number.