Q: Is 138,688 a Prime Number?
A: No, 138,688 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 138688 can be evenly divided by 1 2 4 8 11 16 22 32 44 64 88 176 197 352 394 704 788 1,576 2,167 3,152 4,334 6,304 8,668 12,608 17,336 34,672 69,344 and 138,688, with no remainder.
Since 138,688 cannot be divided by just 1 and 138,688, it is not a prime number.