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-   Riesel Prime Search (https://www.mersenneforum.org/forumdisplay.php?f=59)

 paulunderwood 2020-03-16 22:29

[QUOTE=JeppeSN;539859]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 [URL="https://www.primegrid.com/stats_div_llr.php"]https://www.primegrid.com/stats_div_llr.php[/URL].

/JeppeSN[/QUOTE]

pm ryanp

 pepi37 2020-03-24 19:15

New near-repdigit prime :)

93*10^642225-1 :)

[URL]https://primes.utm.edu/primes/page.php?id=130796[/URL]

 paulunderwood 2020-03-24 20:09

[QUOTE=pepi37;540770]93*10^642225-1 :)

[URL]https://primes.utm.edu/primes/page.php?id=130796[/URL][/QUOTE]

Congrats!

 pepi37 2020-03-24 20:32

[QUOTE=paulunderwood;540780]Congrats![/QUOTE]

Thanks!

 paulunderwood 2020-03-30 13:04

[QUOTE=paulunderwood;539623]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 :smile:[/QUOTE]

Go, Ryan, go. The latest is 28th biggest known prime with 3,734,847 digits:
[URL="https://primes.utm.edu/primes/page.php?id=130801"]
9*2^12406887+1[/URL]

 JeppeSN 2020-04-01 08:53

[QUOTE=paulunderwood;541322]Go, Ryan, go. The latest is 28th biggest known prime with 3,734,847 digits:
[URL="https://primes.utm.edu/primes/page.php?id=130801"]
9*2^12406887+1[/URL][/QUOTE]

There is already a newer and bigger one, [URL="https://primes.utm.edu/primes/page.php?id=130806"]9*2^13334487 + 1[/URL]. 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

 rudy235 2020-06-01 01:38

NOT YET VERIFIED

The largest Generalized Fermat of the Year. (and also the largest of the form a^2[SUP]19[/SUP]+1 )

Congratulations to Wolfang and his team.

3638450[SUP]524288[/SUP] + 1 3439810 L4591 May 31st 2020

Ranked as 35 of the list.

 paulunderwood 2020-06-13 16:10

The 20th largest known prime has been found by Ryan Propper:

[URL="https://primes.utm.edu/primes/page.php?id=130967"]6*5^6546983 + 1[/URL]

:banana:

 pepi37 2020-06-25 21:04

Nice and shiny fresh one

[URL]https://primes.utm.edu/primes/page.php?id=130989[/URL]

9 *10^583696 + 1 :)

 carpetpool 2020-07-06 03:34

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.

 a1call 2020-07-06 06:06

Congratulations [B]carpetpool[/B]. It's good to see that at least some of the Top 5k contributors are nice people.:smile:
Well done!

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