Totally useless trivia... 41 - Printable Version +- HP Forums ( https://archived.hpcalc.org/museumforum)+-- Forum: HP Museum Forums ( https://archived.hpcalc.org/museumforum/forum-1.html)+--- Forum: Old HP Forum Archives ( https://archived.hpcalc.org/museumforum/forum-2.html)+--- Thread: Totally useless trivia... 41 ( /thread-206481.html) |

Totally useless trivia... 41 - Ángel Martin - 12-07-2011
http://primes.utm.edu/curios/page.php/41.html you've been warned...
Incidentally I came across that while looking for a 41-MCODE routine to calculate the sum of digits of a given number - anybody remembers where that'd be?
Re: Totally useless trivia... 41 - bill platt - 12-07-2011
ironically the 41c is not mentioned.
Re: Totally useless trivia... 41 - Don Shepherd - 12-07-2011
I don't know about MCODE and the HP-41, but here's a nice little HP-17b solver equation that gives you the sum of digits of a number. It even works on the newer HP-17bii+.
SOD=(I:0:LOG(N):1:MOD(IDIV(N:10^I):10)) |