Q: Is 72,105 a Prime Number?
A: No, 72,105 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 72105 can be evenly divided by 1 3 5 11 15 19 23 33 55 57 69 95 115 165 209 253 285 345 437 627 759 1,045 1,265 1,311 2,185 3,135 3,795 4,807 6,555 14,421 24,035 and 72,105, with no remainder.
Since 72,105 cannot be divided by just 1 and 72,105, it is not a prime number.