Q: Is 143,507 a Prime Number?
A: No, 143,507 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 143507 can be evenly divided by 1 7 13 19 83 91 133 247 581 1,079 1,577 1,729 7,553 11,039 20,501 and 143,507, with no remainder.
Since 143,507 cannot be divided by just 1 and 143,507, it is not a prime number.