Q: Is 103,215 a Prime Number?
A: No, 103,215 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 103215 can be evenly divided by 1 3 5 7 15 21 35 105 983 2,949 4,915 6,881 14,745 20,643 34,405 and 103,215, with no remainder.
Since 103,215 cannot be divided by just 1 and 103,215, it is not a prime number.