I looked over the essay by roger hui and the: pow=: 4 : '*/ *~^:(I.|.#:y) x'
works ok. Regreatably, time '<: 2x pow 1257787' NB. takes ~41.0 sec I will try:: time '<: 2x pow 43112609' overnight and see what it takes. ----- Original Message Follows ----- From: Aai <[email protected]> To: Programming forum <[email protected]> Subject: Re: [Jprogramming] Mersenne Prime initialization. Date: Thu, 09 Apr 2009 20:18:24 +0200 >Sorry, another try: > >http://www.jsoftware.com/jwiki/Essays/Repeated_Squaring > > >-- >=@@i > >----------------------------------------------------------- >----------- For information about J forums see >http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
