Q: Is 509,985 a Prime Number?
A: No, 509,985 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 509985 can be evenly divided by 1 3 5 7 9 15 21 35 45 63 105 315 1,619 4,857 8,095 11,333 14,571 24,285 33,999 56,665 72,855 101,997 169,995 and 509,985, with no remainder.
Since 509,985 cannot be divided by just 1 and 509,985, it is not a prime number.