Q: Is 138,787 a Prime Number?
A: No, 138,787 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 138787 can be evenly divided by 1 11 31 37 121 341 407 1,147 3,751 4,477 12,617 and 138,787, with no remainder.
Since 138,787 cannot be divided by just 1 and 138,787, it is not a prime number.