 computing teh last digits without computing the number - Printable Version +- Tetration Forum (https://math.eretrandre.org/tetrationforum) +-- Forum: Tetration and Related Topics (https://math.eretrandre.org/tetrationforum/forumdisplay.php?fid=1) +--- Forum: Computation (https://math.eretrandre.org/tetrationforum/forumdisplay.php?fid=8) +--- Thread: computing teh last digits without computing the number (/showthread.php?tid=242) computing teh last digits without computing the number - deepinlife - 02/23/2009 guys how can i compute teh last digit of a number , resulting from tetration without computing the real number.. for example ...5||2 = 2^65536...how can i get the last digit of that number without computing it..teh last 8 digits for example ? RE: computing teh last digits without computing the number - bo198214 - 02/23/2009 deepinlife Wrote:guys how can i compute teh last digit of a number , resulting from tetration without computing the real number.. for example ...5||2 = 2^65536...how can i get the last digit of that number without computing it..teh last 8 digits for example ?See here. Where do you guys get those questions? Is it a homework exercise or so? RE: computing teh last digits without computing the number - andydude - 02/24/2009 bo198214 Wrote:Where do you guys get those questions? Is it a homework exercise or so? These questions are very common in contests, like the Putnam Competition. Andrew Robbins RE: computing teh last digits without computing the number - deepinlife - 02/24/2009 it is a problem in a site : http://projecteuler.net/index.php?section=problems&id=214