Q: Is 385,215 a Prime Number?
A: No, 385,215 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 385215 can be evenly divided by 1 3 5 15 61 183 305 421 915 1,263 2,105 6,315 25,681 77,043 128,405 and 385,215, with no remainder.
Since 385,215 cannot be divided by just 1 and 385,215, it is not a prime number.