Q: Is 71,145 a Prime Number?
A: No, 71,145 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 71145 can be evenly divided by 1 3 5 9 15 17 27 31 45 51 85 93 135 153 155 255 279 459 465 527 765 837 1,395 1,581 2,295 2,635 4,185 4,743 7,905 14,229 23,715 and 71,145, with no remainder.
Since 71,145 cannot be divided by just 1 and 71,145, it is not a prime number.