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 2023-05-22, 22:02 #639 NorbSchneider     "Norbert" Jul 2014 Budapest 127 Posts Another new PRP: 41171^41272+41272^41171, 190454 digits.
 2023-05-23, 16:52 #640 lghu   Nov 2019 111012 Posts L(558232,19) index: 11653091556 L(684614,15) index: 14521126145
 2023-05-25, 04:01 #641 ryanp     Jun 2012 Boulder, CO 2·227 Posts A new, record Leyland PRP: Code: 1343238^19+19^1343238
 2023-05-25, 13:18 #642 lghu   Nov 2019 29 Posts Index of L(1343238,19) is 58259818091 (maybe).
2023-05-25, 13:55   #643
pxp

Sep 2010
Weston, Ontario

111101112 Posts

Quote:
 Originally Posted by lghu Index of L(1343238,19) is 58259818091 (maybe).
Thank you. I did double-check your 41803655301 index for L(300102,59935) and my (Mathematica) program agreed. However, it took ten days, so verification for this new one will be about two weeks.

 2023-05-25, 19:54 #644 Cybertronic     Jan 2007 Germany 33×52 Posts Congratulation Ryan for a new world record LP ! Page got an updated. https://pzktupel.de/Primetables/TableLeyland1.php Last fiddled with by Cybertronic on 2023-05-25 at 19:57
2023-05-27, 19:24   #645
lghu

Nov 2019

358 Posts

Quote:
 Originally Posted by pxp I did double-check your index for.
Thanks for checking. It is reassuring that the program calculated well, which can work in two ways: it performs a quick but sometimes erroneous estimate or a more accurate calculation that takes longer. The more detailed results were:

The estimates are:
LI(300102,59935) ~ 41803655301+0, time: 1 sec
LI(1343238,19) ~ 58259818092-2, time: 1 sec [It differs by 1]

LI(300102,59935) = 41803655301, time: 12811 sec
LI(1343238,19) = 58259818091, time: 18324 sec

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