Q: Is 505,855 a Prime Number?
A: No, 505,855 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 505855 can be evenly divided by 1 5 7 35 97 149 485 679 745 1,043 3,395 5,215 14,453 72,265 101,171 and 505,855, with no remainder.
Since 505,855 cannot be divided by just 1 and 505,855, it is not a prime number.