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 Showing results 1 to 4 of 4 Search took 0.01 seconds. Search: Posts Made By: JeppeSN
 2020-08-03, 18:13 Replies: 22 Views: 12,102 Posted By JeppeSN That is true: This PARI/GP function imitates your... That is true: This PARI/GP function imitates your program, with an optional seed argument: findPeriod(p,seed=4)=s=Mod(seed,2^p-1);for(i=1,120000,s=s^2-2);S=s;i=0;until(s==S,S=S^2-2;i++);i ...
 2020-08-03, 17:30 Replies: 22 Views: 12,102 Posted By JeppeSN It is perhaps also interesting to note the... It is perhaps also interesting to note the lengths of the "pre-periods", or offsets. That is the number of terms in the LL sequence preceding the first occurrence of the period. With Batalov's data...
 2020-08-03, 07:33 Replies: 22 Views: 12,102 Posted By JeppeSN Thanks, Batalov, that confirms my suspicion. For... Thanks, Batalov, that confirms my suspicion. For example for p=37 (the first one Viliam Furik's method failed for), we start with: 4 -> 14 -> 194 -> 37634 -> 1416317954 -> (period starts here)...
 2020-08-02, 09:26 Replies: 22 Views: 12,102 Posted By JeppeSN The LL sequence starts 4, 14, 194, ... Since... The LL sequence starts 4, 14, 194, ... Since we calculate modulo 2^p - 1, there are only finitely many values we can hit, so sooner or later we are going to hit a value we have seen before. For...
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