Q: Is 800,553 a Prime Number?
A: No, 800,553 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 800553 can be evenly divided by 1 3 13 39 169 507 1,579 4,737 20,527 61,581 266,851 and 800,553, with no remainder.
Since 800,553 cannot be divided by just 1 and 800,553, it is not a prime number.