Report top-5000 primes here - Page 88

rebirther · 2021-08-01, 16:02

5608*70^429979+1 found by Sputnik (793358 digits)
9231*70^515544+1 found by grcpool.com-3 (951234 digits)

sweety439 · 2021-08-02, 03:38

Quote:

Originally Posted by rebirther

5608*70^429979+1 found by Sputnik (793358 digits)
9231*70^515544+1 found by grcpool.com-3 (951234 digits)

Nice!!! Now S70 become a 1k base, and it is now the 1k Sierp base with 2nd largest CK (the 1st largest CK is S430), and if proven (I think that both this base and S430 can be proven when tested to n=1M), it will be the proven (Sierp and Riesel) base (other than the Liskovets-Gallot conjecture, i.e. Sierp base 2 even n) with largest CK

rebirther · 2021-08-04, 14:40

166*972^162571-1 found by Doug (485711 digits)
9216*421^191802+1 found by whizbang (503347 digits)
14296*421^216090+1 found by KySU (567086 digits)
24838*421^224768+1 found by KySU (589860 digits)
26362*421^244658+1 found by JohnMD (642057 digits)
26040*421^251428+1 found by KySU (659823 digits)

rebirther · 2021-08-07, 06:08

6070*466^273937+1 found by CharityEngine1 (730974 digits)

gd_barnes · 2021-08-14, 19:56

736663*2^1794419-1 is prime

rogue · 2021-08-14, 22:02

Quote:

Originally Posted by gd_barnes

736663*2^1794419-1 is prime

Which conjecture is this?

gd_barnes · 2021-08-15, 05:11

Sierpinski base 1030

pepi37 · 2021-08-15, 09:14

How can prime be-1 and Sierpinski? Mean Riesel?

gd_barnes · 2021-08-15, 09:19

Oops. Riesel base 1030.

henryzz · 2021-08-15, 11:04

Also how base 1030 when it looks like base 2?

kar_bon · 2021-08-15, 13:39

Quote:

Originally Posted by rogue

Which conjecture is this?

It's the 2nd Riesel Problem.

2021-08-04, 14:40	#960
rebirther Sep 2011 Germany 2·1,559 Posts	166972^162571-1 found by Doug (485711 digits) 9216421^191802+1 found by whizbang (503347 digits) 14296421^216090+1 found by KySU (567086 digits) 24838421^224768+1 found by KySU (589860 digits) 26362421^244658+1 found by JohnMD (642057 digits) 26040421^251428+1 found by KySU (659823 digits) Last fiddled with by rebirther on 2021-08-04 at 15:08 Reason: +S421

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2021-08-01, 16:02	#958
rebirther Sep 2011 Germany 6056₈ Posts	560870^429979+1 found by Sputnik (793358 digits) 923170^515544+1 found by grcpool.com-3 (951234 digits)

2021-08-07, 06:08	#961
rebirther Sep 2011 Germany 2×1,559 Posts	6070*466^273937+1 found by CharityEngine1 (730974 digits)

2021-08-14, 19:56	#962
gd_barnes May 2007 Kansas; USA 5·2,141 Posts	736663*2^1794419-1 is prime

2021-08-15, 05:11	#964
gd_barnes May 2007 Kansas; USA 29D1₁₆ Posts	Sierpinski base 1030

2021-08-15, 09:14	#965
pepi37 Dec 2011 After milion nines:) 2·757 Posts	How can prime be-1 and Sierpinski? Mean Riesel?

2021-08-15, 09:19	#966
gd_barnes May 2007 Kansas; USA 5×2,141 Posts	Oops. Riesel base 1030.

2021-08-15, 11:04	#967
henryzz Just call me Henry "David" Sep 2007 Liverpool (GMT/BST) 2⁵·11·17 Posts	Also how base 1030 when it looks like base 2?