Q: Is 1,355,321 a Prime Number?
A: No, 1,355,321 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 1355321 can be evenly divided by 1 11 23 121 253 487 2,783 5,357 11,201 58,927 123,211 and 1,355,321, with no remainder.
Since 1,355,321 cannot be divided by just 1 and 1,355,321, it is not a prime number.