Q: Is 1,200,015 a Prime Number?
A: No, 1,200,015 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 1200015 can be evenly divided by 1 3 5 9 15 27 45 81 135 405 2,963 8,889 14,815 26,667 44,445 80,001 133,335 240,003 400,005 and 1,200,015, with no remainder.
Since 1,200,015 cannot be divided by just 1 and 1,200,015, it is not a prime number.