Q: Is 478,515 a Prime Number?
A: No, 478,515 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 478515 can be evenly divided by 1 3 5 15 19 23 57 69 73 95 115 219 285 345 365 437 1,095 1,311 1,387 1,679 2,185 4,161 5,037 6,555 6,935 8,395 20,805 25,185 31,901 95,703 159,505 and 478,515, with no remainder.
Since 478,515 cannot be divided by just 1 and 478,515, it is not a prime number.