Q: Is 1,000,623 a Prime Number?
A: No, 1,000,623 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 1000623 can be evenly divided by 1 3 13 39 25,657 76,971 333,541 and 1,000,623, with no remainder.
Since 1,000,623 cannot be divided by just 1 and 1,000,623, it is not a prime number.