Q: Is 1,187,505 a Prime Number?
A: No, 1,187,505 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 1187505 can be evenly divided by 1 3 5 9 11 15 33 45 55 99 165 495 2,399 7,197 11,995 21,591 26,389 35,985 79,167 107,955 131,945 237,501 395,835 and 1,187,505, with no remainder.
Since 1,187,505 cannot be divided by just 1 and 1,187,505, it is not a prime number.