20220423, 10:29  #496 
Nov 2019
2^{4} Posts 
Next PRP:
101542^92885+92885^101542, 504465 digit, index: 6185645908 PRPtop confirmation OK. 
20220423, 16:02  #497 
Sep 2010
Weston, Ontario
233 Posts 

20220428, 16:15  #498 
Nov 2019
2^{4} Posts 

20220508, 20:06  #499  
Bamboozled!
"๐บ๐๐ท๐ท๐ญ"
May 2003
Down not across
10110011110000_{2} Posts 
Quote:
Code:
300 5829184 10133 (3178,1543) Alexander Kuzmich Oct 2001 If so, I may give it a whirl through the latest ECPP release. 

20220508, 21:19  #500 
Sep 2010
Weston, Ontario
351_{8} Posts 

20220509, 08:44  #501 
Bamboozled!
"๐บ๐๐ท๐ท๐ญ"
May 2003
Down not across
2^{4}×719 Posts 

20220509, 10:08  #502 
Sep 2010
Weston, Ontario
11101001_{2} Posts 
I have now finished testing the Leyland numbers in the interval from L(303999,10) to L(304999,10) and have found therein 10 PRPs. That completes the fifth and final part of finding all PRPs in the interval L(299999,10) to L(304999,10). I have therein 63 PRPs, one of which is Anatoly Selevich's L(314738,9) found back in February 2011. I started the project on May 31 of last year, testing 1186439 sievedto10^10 candidates, manually distributed across (mostly) 72 Macmini cores, only taking some time out in August to add L(83747,41272) and L(80565,62824).
Last fiddled with by pxp on 20220509 at 10:17 Reason: wording 
20220509, 15:05  #503  
Bamboozled!
"๐บ๐๐ท๐ท๐ญ"
May 2003
Down not across
2^{4}·719 Posts 
Quote:
Now as far along as Code:
 Size [11]: 33084 bits Time for discriminant 744891: 2732.0 (556.9) largest prime of d: 449 largest prime of h: 11 discriminants: 8.3 (9.0) 1385 qroot: 6230.7 (1329.4) 2395689 Cornacchia: 13309.0 (2787.3) 37864 trial div: 2528.1 (442.3) 9211 is_prime: 41706.0 (8859.6)  Size [12]: 33026 bits 

20220510, 18:32  #504 
Jul 2003
So Cal
2×11×113 Posts 
I'll give (3042,2231) a go. I think it should take only a few hours on six 20core nodes.

20220510, 19:45  #505 
"Oliver"
Sep 2017
Porta Westfalica, DE
1166_{10} Posts 

20220510, 20:08  #506 
Jul 2003
So Cal
2·11·113 Posts 

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