Q: Is 209,139 a Prime Number?
A: No, 209,139 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 209139 can be evenly divided by 1 3 7 21 23 69 161 433 483 1,299 3,031 9,093 9,959 29,877 69,713 and 209,139, with no remainder.
Since 209,139 cannot be divided by just 1 and 209,139, it is not a prime number.