Resuming an old post......................while crunching numberes  Printable Version + HP Forums (https://archived.hpcalc.org/museumforum) + Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum1.html) + Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum2.html) + Thread: Resuming an old post......................while crunching numberes (/thread231901.html) 
Resuming an old post......................while crunching numberes  aurelio  09242012 Hi all! just a couple of days ago, I was trying to calculate with programs written for hp67 (stat pac), HP41c and HP42s (J.Baillard, thanks) n! of an integer (5.850 or 5,850 for the ones who use the comma in place of dot).... Here below the porformances (crunching time) HP67 >>>>>>>>>>>>>> 2h 15' HP41c >>>>>>>>>>>>> 20 ' HP41c emulator>>>>> 14' HP42s >>>>>>>>>>>>> 11' Hp42s emulator>>>>> 3'' (woah!) HP49g+(build in fn) 20' not yet tested with WP34s Really we moved in the last years from the moon to mars!
Edited: 26 Sept 2012, 9:05 a.m. after one or more responses were posted
Re: Resuming and old post......................while crunching numberes  Gerson W. Barbosa  09242012 Quote:Because there is not such a calculator, I presume :) Re: Resuming and old post......................while crunching numberes  Olivier De Smet  09242012 Tested on go49g (builtin in exact mode) on a galaxy tab10.1: 180 seconds :) (a number of 19500 digits with 1460 '0' at the end)
P.S. I'm curious about the HP67/97 program for testing it on my emulators ... Edited: 24 Sept 2012, 6:22 p.m.
Re: Resuming and old post......................while crunching numberes  aurelio  09252012 Quote:
Re: Resuming and old post......................while crunching numberes  Gerson W. Barbosa  09252012 I know you meant the WP 34S, sorry! This only reflects our desire to have the WP 42S one day :)
Re: Resuming and old post......................while crunching numberes  Frido Bohn  09252012 <10 '' Galaxy Tab 7'' using Wolfram Alpha App (Android) Re: Resuming and old post......................while crunching numberes  jerome ibanes  09252012 Hm, I'd really like to know how long this takes on the WP.
Re: Resuming and old post......................while crunching numberes  Paul Dale  09262012 5850! overflows double precision, although the internal numeric format will represent this just fine  it supports truly huge exponents. The answer is of the order of 10^{19499} which is tiny in comparison. We can do better of course. Log gamma just happens to be a builtin function. LnGamma of 5851 takes under a second and returns 44899.3081516.... divide this by Ln(10) and get 19499.5217715.... take the fractional portion and raising 10 to this power gives: 3.324845739721310138138472210374560 x 10^{19499}. So 29 accurate digits in a few seconds manually and under a second from a program. I did all this in double precision mode  single precision won't be any faster. I'm not going to find the precise overflow threshold for factorial, however 2000! doesn't overflow double precision mode.  Pauli
Edited: 26 Sept 2012, 6:48 a.m.
Re: Resuming an old post......................while crunching numbers  Walter B  09262012 2123! is the last working before an overflow error in double precision.
Re: Resuming an old post......................while crunching numbers  Paul Dale  09262012 What about the fractional part? Factorial is really a gamma function :)
 Pauli
Re: Resuming an old post......................while crunching numbers  Gerson W. Barbosa  09262012 The program below gives a very rough approximation of x (x > 1.5), given x!: 6145 10^x A > 2123.51 x! > 7.64e6144 Gerson.
001 LBL A
Re: Resuming an old post......................while crunching numbers  Walter B  09272012 By nested intervals, I get 1^{HIG} in double precision Edited: 27 Sept 2012, 5:05 a.m.
