Q: Is 921,875 a Prime Number?
A: No, 921,875 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 921875 can be evenly divided by 1 5 25 59 125 295 625 1,475 3,125 7,375 15,625 36,875 184,375 and 921,875, with no remainder.
Since 921,875 cannot be divided by just 1 and 921,875, it is not a prime number.