mersenneforum.org Operation: Billion Digits
 Register FAQ Search Today's Posts Mark Forums Read

2004-04-13, 21:31   #133
nitro

Feb 2003

4E16 Posts
3321928373 - update

Quote:
 Originally Posted by nitro no factor to 65 bits M3321928373 no factor from 2^63 to 2^64. M3321928373 no factor from 2^64 to 2^65.

M3321928373 no factor from 2^65 to 2^66.

 2004-04-14, 06:31 #134 Uncwilly 6809 > 6502     """"""""""""""""""" Aug 2003 101×103 Posts 2×3×1,583 Posts M3321929041 no factor from 2^60 to 2^62. I will slowly work on M3321928307 to take it to 70 (currently at 69.09). (Or get a factor). I hope to be the first to 70bit. I made some graphs on our progress in Excel, but to get them out of it into a .gif is a pain and then they are too large to post. I will see what I can do.....
2004-04-14, 13:29   #135
jinydu

Dec 2003
Hopefully Near M48

33368 Posts

Quote:
 Originally Posted by Uncwilly Well I took the current high end, the I ran higher numbers through http://www.2357.a-tu.net/index.php?link=Primality I have run a bunch to 60 bits and will report the data once I finish my list. (Soon.)
That site is a little inconvenient. Does anyone know a site that can give for smallest prime greater than n, where n is allowed to be "reasonably" large (rather than manually typing in possible primes and testing them one at a time)?

Last fiddled with by jinydu on 2004-04-14 at 13:31

2004-04-14, 13:36   #136
Uncwilly
6809 > 6502

"""""""""""""""""""
Aug 2003
101×103 Posts

2×3×1,583 Posts

Here is a graph that should provide a nice repreentation of the status of the project. (66% accuracy guarenteed)
Attached Files
 Billstat.zip (7.6 KB, 158 views)

 2004-04-14, 16:50 #137 Uncwilly 6809 > 6502     """"""""""""""""""" Aug 2003 101×103 Posts 2×3×1,583 Posts Based upon the mention in a different thread this posting I did TF Code: M3321928094941 no factor from 2^2 to 2^60. M3321928094941 no factor from 2^60 to 2^65. M3321928094941 no factor from 2^65 to 2^70. M3321928094941 no factor from 2^70 to 2^72.
2004-04-14, 21:07   #138
nitro

Feb 2003

2×3×13 Posts
3321928373 - update

Quote:
 Originally Posted by nitro M3321928373 no factor from 2^65 to 2^66.
Neither is there a factor to 67 bits

M3321928373 no factor from 2^66 to 2^67.

2004-04-14, 21:22   #139
Maybeso

Aug 2002
Portland, OR USA

4228 Posts

Quote:
 Originally Posted by jinydu That site is a little inconvenient. Does anyone know a site that can give for smallest prime greater than n, where n is allowed to be "reasonably" large (rather than manually typing in possible primes and testing them one at a time)?
Dario Alperns Applet supports B(n) for pseudoprime previous to n, and N(n) for pseudoprime next to n. Scroll down for the explanation. You still have to type them in one at a time, but you'll get very very few misses, and it immediately checks the primality for you.

HTH, Bruce

2004-04-14, 22:02   #140
ET_
Banned

"Luigi"
Aug 2002
Team Italia

10010110011002 Posts

Quote:
 Originally Posted by jinydu That site is a little inconvenient. Does anyone know a site that can give for smallest prime greater than n, where n is allowed to be "reasonably" large (rather than manually typing in possible primes and testing them one at a time)?
Try this program, with the two Cygwin libraries...

Luigi
Attached Files
 primelister.zip (4.3 KB, 150 views)

 2004-04-15, 10:45 #141 jinydu     Dec 2003 Hopefully Near M48 33368 Posts I've downloaded a program that will automatically give me the smallest prime less than n, though it will expire in 30 days...
2004-04-15, 10:50   #142
ET_
Banned

"Luigi"
Aug 2002
Team Italia

10010110011002 Posts

Quote:
 Originally Posted by jinydu I've downloaded a program that will automatically give me the smallest prime less than n, though it will expire in 30 days...
I wrote a program that can give you the smallest prime greater than n.

It's freeware... just ask for it.

Luigi

2004-04-15, 18:32   #143
nitro

Feb 2003

4E16 Posts

Quote:
 Originally Posted by nitro Neither is there a factor to 67 bits M3321928373 no factor from 2^66 to 2^67.
Neither is there one to 68 bits

M3321928373 no factor from 2^67 to 2^68.

 Similar Threads Thread Thread Starter Forum Replies Last Post aketilander Operation Billion Digits 14 2021-02-27 07:14 a1call Miscellaneous Math 179 2015-11-12 14:59 Oddball Twin Prime Search 370 2013-01-03 21:26 smslca Math 3 2011-04-18 17:18 Unregistered Information & Answers 7 2010-08-12 06:25

All times are UTC. The time now is 10:16.

Thu Apr 22 10:16:03 UTC 2021 up 14 days, 4:56, 0 users, load averages: 1.40, 1.92, 1.85