10/18/2010, 12:09 AM
(This post was last modified: 10/18/2010, 12:12 AM by nuninho1980.)
By the results have 5 cases decimais (minimum).
Please you think to calculate on up... I have known its by program Pari/GP (it's very fast). x)
Pentation roots self but please you do...

10/18/2010, 12:09 AM
(This post was last modified: 10/18/2010, 12:12 AM by nuninho1980.)
By the results have 5 cases decimais (minimum). Please you think to calculate on up... I have known its by program Pari/GP (it's very fast). x)
11/03/2010, 05:26 AM
(10/18/2010, 12:09 AM)nuninho1980 Wrote:Pentation is hard to understand.... Here's my results. I used "b" for the base. , for each "n", calculate b , calculate b , calculate b , calculate b and so on, limit as n= 2 1.63221539635499 n= 3 1.73480823757765 n= 4 1.73013167405422 n= 5 1.71198477313212 n= 6 1.69588829898111 n=70 1.63599652477221 I calculated these values by simple binary search, but I used "\p 28", which is accurate to ~14 digits, but very fast, 4 seconds for init(B);loop. Only problem is its very easy to get an overflow, so the initial starting based needs to readjusted; for n=70, I used a more complicated algorithm. Code: \r kneser.gp As n goes to infinity, I would expect the value for b to go to Nuinho's constant, the base for which the upper fixed point of sexp is parabolic, b=1.635324496715276399345344618306171  Sheldon
11/03/2010, 12:54 PM
(This post was last modified: 11/03/2010, 12:56 PM by nuninho1980.)
It's excellent!! Congratulations! But you are 2 weeks later. I already could calculate pentaroots but I tried to "explore" each digit by "lottery" up to 5 digits from days 15 to 17, october because I used only "kneser.gp".
Nuinho's constant  bad but yes Nuninho thank! 
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