Q: Is 1,403,215 a Prime Number?
A: No, 1,403,215 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 1403215 can be evenly divided by 1 5 11 31 55 155 341 823 1,705 4,115 9,053 25,513 45,265 127,565 280,643 and 1,403,215, with no remainder.
Since 1,403,215 cannot be divided by just 1 and 1,403,215, it is not a prime number.