Q: Is 816,516 a Prime Number?
A: No, 816,516 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 816516 can be evenly divided by 1 2 3 4 6 9 12 18 36 37 74 111 148 222 333 444 613 666 1,226 1,332 1,839 2,452 3,678 5,517 7,356 11,034 22,068 22,681 45,362 68,043 90,724 136,086 204,129 272,172 408,258 and 816,516, with no remainder.
Since 816,516 cannot be divided by just 1 and 816,516, it is not a prime number.