Q: Is 139,909 a Prime Number?
A: No, 139,909 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 139909 can be evenly divided by 1 7 11 23 77 79 161 253 553 869 1,771 1,817 6,083 12,719 19,987 and 139,909, with no remainder.
Since 139,909 cannot be divided by just 1 and 139,909, it is not a prime number.