> 
> D.Pgms.maths.BigNum.sumryf241Q    careful xxx
this file  > D.Pgms.maths.BigNum.Euler641
(higher filtering of primes. ?? prog c24. c241Q  c22Byte 8-3-2003.)

641 divides "cofactor too big" telephone keypad.

89 divides "Euler" telephone keypad.
89*11 divides "euler leonard"(base.27.=32212128939663948=

11 divides "leonard"(teleph kpd..=5366273= 11*487843*all 8cs

limits 60037*60041^2 ok. bugs. 2^52+1=17*858001* use prog facthcf.
 3^33+30 etc. ok.= 3*47*549167*71792299.

my file > *ram.sumryfact.creditcd1..  Tue,11 Mar 2003.23:45:21
by don.mcdonald.pgm.c22Bc. BBC Basic64.Risc os.Acorn Archimedes comp 1990.

== LETTER values : C,A,T = 03,01,20. (BASE 100, Altern. base 27, keypad)
(prob) -- #formula,--  value, --   FACTORS -- ,  (centiseconds).
---   
2  3^33..=5559060566555523= Accy?(3th powof(11th powof(3*all 3cs
3  n1+543-523..=5559060566555543= Accy?(? 2mn
4  p(2)+2..=5559060566555525= Accy?(5*5*?4643671*47885051prime 6mn
5  p(3)/237379..=23418501917= 23418501917prime 24s.
6  "cofactor toobig"(telephone keypad
..=26322867866244= (2^2*3*17) *29*641***881*7879*all 25cs

7  "euler 641"(base 100..=521120518= 2*113*349*6607*all 7cs
8  "euler"(base 27..=3079449= 3*3*577*593*all 7cs
9  "euler"(teleph kpd)..=38537= 89*433*all 4cs   factor 89**.
10  "leonard euler"(tele..=536627338537= 536627338537prime 1mn
11  "leonard euler"(base.27.=67856537929322144= Accy?(2^2*2^2*2*? 44s.
abandoned

12  "leonard"(base 100..=12051514011804= 2^2*3*79*12712567523prime 20s.
13  "leonard"(base 27..=4729038799= 4729038799prime 19s.
14  "leonard"(teleph kpd..=5366273= 11*487843*all 8cs
15  "euler leonard"(tele..=385375366273= 385375366273prime 1mn
16  "euler leonard"(base..=32212128939663948= Accy?(2^2*3*11*89*36643*74828057*all 6s.  **factor 89.*11 (mersenne.)
