Q: Is 10,400 a Prime Number?
A: No, 10,400 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 10400 can be evenly divided by 1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 65 80 100 104 130 160 200 208 260 325 400 416 520 650 800 1,040 1,300 2,080 2,600 5,200 and 10,400, with no remainder.
Since 10,400 cannot be divided by just 1 and 10,400, it is not a prime number.