Q: Is 102,400 a Prime Number?
A: No, 102,400 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 102400 can be evenly divided by 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 512 640 800 1,024 1,280 1,600 2,048 2,560 3,200 4,096 5,120 6,400 10,240 12,800 20,480 25,600 51,200 and 102,400, with no remainder.
Since 102,400 cannot be divided by just 1 and 102,400, it is not a prime number.