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Old 2020-03-16, 22:29   #199
paulunderwood
 
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Quote:
Originally Posted by JeppeSN View Post
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
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Old 2020-03-24, 19:15   #200
pepi37
 
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After milion nines:)

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Default New near-repdigit prime :)

93*10^642225-1 :)


https://primes.utm.edu/primes/page.php?id=130796
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Old 2020-03-24, 20:09   #201
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Quote:
Originally Posted by pepi37 View Post
Congrats!
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Old 2020-03-24, 20:32   #202
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Quote:
Originally Posted by paulunderwood View Post
Congrats!
Thanks!
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Old 2020-03-30, 13:04   #203
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Originally Posted by paulunderwood View Post
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
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Old 2020-04-01, 08:53   #204
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Quote:
Originally Posted by paulunderwood View Post
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
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Old 2020-06-01, 01:38   #205
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Default 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.
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Old 2020-06-13, 16:10   #206
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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
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Old 2020-06-25, 21:04   #207
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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
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Old 2020-07-06, 03:34   #208
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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.
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Old 2020-07-06, 06:06   #209
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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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