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2020-03-16, 22:29   #199
paulunderwood

Sep 2002
Database er0rr

22·72·17 Posts

Quote:
 Originally Posted by JeppeSN What ranges was Propper searching, and did he keep the residues of all the composite candidates he must have covered? This information could be useful to PrimeGrid which is planning to search and double-check (at least a part of) these Proth number regions, see https://www.primegrid.com/stats_div_llr.php. /JeppeSN
pm ryanp

Last fiddled with by paulunderwood on 2020-03-16 at 22:31

 2020-03-24, 19:15 #200 pepi37     Dec 2011 After milion nines:) 2×653 Posts New near-repdigit prime :) 93*10^642225-1 :) https://primes.utm.edu/primes/page.php?id=130796
2020-03-24, 20:09   #201
paulunderwood

Sep 2002
Database er0rr

22·72·17 Posts

Quote:
 Originally Posted by pepi37 93*10^642225-1 :) https://primes.utm.edu/primes/page.php?id=130796
Congrats!

2020-03-24, 20:32   #202
pepi37

Dec 2011
After milion nines:)

2×653 Posts

Quote:
 Originally Posted by paulunderwood Congrats!
Thanks!

2020-03-30, 13:04   #203
paulunderwood

Sep 2002
Database er0rr

22·72·17 Posts

Quote:
 Originally Posted by paulunderwood Congrats to Ryan Propper for his recent batch of proth mega primes for k = 9, 11 and 13 the largest of which has 3,462,100 digits
Go, Ryan, go. The latest is 28th biggest known prime with 3,734,847 digits:

9*2^12406887+1

2020-04-01, 08:53   #204
JeppeSN

"Jeppe"
Jan 2016
Denmark

2·71 Posts

Quote:
 Originally Posted by paulunderwood Go, Ryan, go. The latest is 28th biggest known prime with 3,734,847 digits: 9*2^12406887+1
There is already a newer and bigger one, 9*2^13334487 + 1. He has found 9 huge Proth primes with k in { 9, 11, 13 } in the month of March.

Ryan Propper does not respond to private messages.

/JeppeSN

 2020-06-01, 01:38 #205 rudy235     Jun 2015 Vallejo, CA/. 7×137 Posts NOT YET VERIFIED The largest Generalized Fermat of the Year. (and also the largest of the form a^219+1 ) Congratulations to Wolfang and his team. 3638450524288 + 1 3439810 L4591 May 31st 2020 Ranked as 35 of the list.
 2020-06-13, 16:10 #206 paulunderwood     Sep 2002 Database er0rr 22×72×17 Posts The 20th largest known prime has been found by Ryan Propper: 6*5^6546983 + 1 Last fiddled with by paulunderwood on 2020-06-13 at 16:11
 2020-06-25, 21:04 #207 pepi37     Dec 2011 After milion nines:) 2×653 Posts Nice and shiny fresh one https://primes.utm.edu/primes/page.php?id=130989 9 *10^583696 + 1 :) Last fiddled with by pepi37 on 2020-06-25 at 21:05
 2020-07-06, 03:34 #208 carpetpool     "Sam" Nov 2016 4538 Posts This has been my lucky weekend (just yesterday, I found a T5K prime for CRUS): 26*3^1435875+1 may be prime, but N divides 3^((N-1)/3))-1, restarting with a=5 Time : 1308.400 sec. 26*3^1435875+1 is prime! (685088 decimal digits) Time : 1299.598 sec.
 2020-07-06, 06:06 #209 a1call     "Rashid Naimi" Oct 2015 Remote to Here/There 34738 Posts Congratulations carpetpool. It's good to see that at least some of the Top 5k contributors are nice people. Well done!

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