Q: Is 143,205 a Prime Number?
A: No, 143,205 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 143205 can be evenly divided by 1 3 5 15 9,547 28,641 47,735 and 143,205, with no remainder.
Since 143,205 cannot be divided by just 1 and 143,205, it is not a prime number.