9, 81, 6561, 43046721, ...This would be the sequence 9^(2^(n-1))
square of 6561 is 43046721 square root is 81
There should only be four numbers in the question: 3, 9, 81 and 6561. Then the fifth is 43046721.
812= 6561812= 6561812= 6561812= 6561
65613 = 6561 x 6561 x 6561 = 282429536481
9, 81, 6561, 43046721, ...This would be the sequence 9^(2^(n-1))
square of 6561 is 43046721 square root is 81
The numbers are being squared: 32 = 9 92 = 81 812 = 6561 65612 = 43046721
There should only be four numbers in the question: 3, 9, 81 and 6561. Then the fifth is 43046721.
Any multiple of that number: 6561 x 0 6561 x 1 6561 x 2 etc.
The factors of 387420489 are 1, 3, 9, 27, 81, 243, 729, 2187, 6561, 19683, 59049, 177147, 531441, 1594323, 4782969, 14348907, 43046721, 129140163, 387420489
812= 6561812= 6561812= 6561812= 6561
6561 = 6561.0 or 6561 = 6561/1
65613 = 6561 x 6561 x 6561 = 282429536481
12
6561^3 = 282,429,536,481.
The square root of 6561 is 81