Q: Is 997,191 a Prime Number?
A: No, 997,191 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 997191 can be evenly divided by 1 3 9 13 27 39 81 117 351 947 1,053 2,841 8,523 12,311 25,569 36,933 76,707 110,799 332,397 and 997,191, with no remainder.
Since 997,191 cannot be divided by just 1 and 997,191, it is not a prime number.