Q: Is 2,661,729 a Prime Number?
A: No, 2,661,729 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 2661729 can be evenly divided by 1 3 7 19 21 49 57 133 147 399 931 953 2,793 2,859 6,671 18,107 20,013 46,697 54,321 126,749 140,091 380,247 887,243 and 2,661,729, with no remainder.
Since 2,661,729 cannot be divided by just 1 and 2,661,729, it is not a prime number.