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 2006-09-21, 22:28 #1 Kosmaj     Nov 2003 2·1,811 Posts Other Primes I thought it would be nice to have a thread discussing primes found by others, or by us but not related to RPS. And the first one is 2^1203793-2^601897+1 (362378 digits) new Gaussian Mersenne norm record set by Cruelty. More details can be found here Congratulations! The form can be searched using the latest version of LLR (3.7.x). I tried once at 400k but it was a bit time consuming (on my laptop) and I gave up.
 2006-09-21, 23:02 #2 lsoule     Nov 2004 California 170410 Posts Earlier this month I found 99*10^139670-1, the new Near-repdigit record. In fact, 10 of the top 20 for this form have been entered in the last 2-3 months.
 2006-10-11, 03:16 #3 Kosmaj     Nov 2003 2·1,811 Posts Badges marking the latest 9.8M-digit Mersenne prime are available in this thread. Sign up there if you'd like to have one.
 2006-11-16, 21:57 #4 Cruelty     May 2005 22×11×37 Posts (2^1127239+2^563620+1)/5 is 3-PRP!, which AFAIK is the largest GQ so far The question I have now is, how to prove it is, or it is not a prime BTW: I don't consider using PRIMO or other ECPP based software for this purpose as it would take more than my life to complete
 2006-11-20, 01:55 #5 Kosmaj     Nov 2003 2·1,811 Posts Replies to the above post moved to a separate thread: GQ(1127239) is PRP! Please post further replies there.
 2006-12-02, 09:22 #6 Cruelty     May 2005 22×11×37 Posts Check this out
 2006-12-02, 18:35 #7 Kosmaj     Nov 2003 2·1,811 Posts Yes, huge 26773*2^2465343-1, 742147 digits. 20th of all times! Note that now an entry to Top-100 requires binary exponent n>1.2M !
 2007-01-17, 11:39 #8 robert44444uk     Jun 2003 Suva, Fiji 2·1,021 Posts Monster Someone, outside of this group I think has posted a monster http://primes.utm.edu/primes/page.php?id=79192 21st largest prime every found!!!
 2007-01-17, 12:44 #9 Kosmaj     Nov 2003 362210 Posts That's L191, S. Banka who is (unfortunately ) not with us. He found 5 large primes in only one year, he began with 12121 project but now he is testing k=737 (=11*67) alone. He is now 13th by score!:surprised 4 of his 5 primes are currently in top-100, only Cooper and Heuer have more primes in top-100 while Grobstich has 4 too. Last fiddled with by Kosmaj on 2007-01-17 at 12:46
2007-01-17, 12:57   #10
Thomas11

Feb 2003

27·3·5 Posts

Quote:
 Originally Posted by Kosmaj ... while Grobstich has 4 too.
... and Thomas has 4 in the Top-101.

Last fiddled with by Thomas11 on 2007-01-17 at 13:01

 2007-01-25, 14:46 #11 Kosmaj     Nov 2003 2·1,811 Posts Congrats to David Underbakke (L99) who just reported new largest Sophie-Germain pair (51910 digits): 48047305725*2^172403-1 48047305725*2^172404-1 Only 10 days after the new twin record!

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