Q: Is 172,400 a Prime Number?
A: No, 172,400 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 172400 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 431 862 1,724 2,155 3,448 4,310 6,896 8,620 10,775 17,240 21,550 34,480 43,100 86,200 and 172,400, with no remainder.
Since 172,400 cannot be divided by just 1 and 172,400, it is not a prime number.