Q: Is 138,400 a Prime Number?
A: No, 138,400 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 138400 can be evenly divided by 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 173 200 346 400 692 800 865 1,384 1,730 2,768 3,460 4,325 5,536 6,920 8,650 13,840 17,300 27,680 34,600 69,200 and 138,400, with no remainder.
Since 138,400 cannot be divided by just 1 and 138,400, it is not a prime number.