Q: Is 478,578 a Prime Number?
A: No, 478,578 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 478578 can be evenly divided by 1 2 3 6 31 62 83 93 166 186 249 498 961 1,922 2,573 2,883 5,146 5,766 7,719 15,438 79,763 159,526 239,289 and 478,578, with no remainder.
Since 478,578 cannot be divided by just 1 and 478,578, it is not a prime number.