Re: "Dr." Elphinstone

ewmayer · 2003-07-15, 20:39

Quote:

Originally Posted by bragoria

After being inspired by the mathematical research performed by 'Dr.' Elphinstone... ;) (http://www.mersenneforum.org/viewtopic.php?t=832) I'd thought I'd post the following puzzle...

Find a small factor (or any factor) of the Mersenne number 2^(157,456,128,945,769)-1.

btw - I haven't actually found a factor for this number... and it would take longer than the age of the universe to test this number for primality on a P4, so if you can't find a small factor, you should probably just give up.

But don't worry, it's only 47,399,017,813,816 digits long!

Since Richard Wackerbarth locked the original thread due to its being off-topic, I had to start a new one to reply:

M157456128945769 has a factor: 2391758598686231111.

I checked up to 72 bits - no other factors turned up in this range.

Orgasmic Troll · 2003-07-15, 20:42

edit: quick fingers, slow brain.

ops:

Wacky · 2003-07-15, 20:48

It is still off topic. Please do not post this kind of discussion under "Puzzles"

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2003-07-15, 20:42	#2
Orgasmic Troll Cranksta Rap Ayatollah Jul 2003 641 Posts	edit: quick fingers, slow brain. ops:

2003-07-15, 20:48	#3
Wacky Jun 2003 The Texas Hill Country 3²·11² Posts	It is still off topic. Please do not post this kind of discussion under "Puzzles"