Q: Is 100,400 a Prime Number?
A: No, 100,400 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 100400 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 50 80 100 200 251 400 502 1,004 1,255 2,008 2,510 4,016 5,020 6,275 10,040 12,550 20,080 25,100 50,200 and 100,400, with no remainder.
Since 100,400 cannot be divided by just 1 and 100,400, it is not a prime number.