Q: Is 390,015 a Prime Number?
A: No, 390,015 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 390015 can be evenly divided by 1 3 5 9 15 27 45 81 107 135 243 321 405 535 729 963 1,215 1,605 2,889 3,645 4,815 8,667 14,445 26,001 43,335 78,003 130,005 and 390,015, with no remainder.
Since 390,015 cannot be divided by just 1 and 390,015, it is not a prime number.