S/R Base 5 Primes in 2010
 

This will be the thread for all S/R Primes reported in 2010.

The previous two Prime threads, covering the beginning to 2008 can be found here:

[url=http://www.mersenneforum.org/showthread.php?t=6672]The Prime Announcement Thread[/URL]

[URL=http://www.mersenneforum.org/showthread.php?t=3125]Sierpinski/Riesel Base 5: Post Primes Here[/URL]

There were no Primes reported in 2009.

[CODE]45742*5^303011-1 Rover 28 April 2010
193786*5^306459-1 PCZ 28 May 10
325846*5^310371-1 Rover 04 Jun 10
284422*5^312235-1 PCZ 04 Jun 10
291364*5^316439-1 PCZ 09 Jun 10
107354*5^360196-1 PCZ 16 Jun 10
157672*5^333603-1 Lennart 13 Jun 10
68576*5^344598-1 Lennart 15 Jun 10
282316*5^355063-1 Lennart 23 Jun 10
156694*5^383789-1 Lennart 03 Jul 10
71084*5^387704-1 Lennart 04 Jul 10
98038*5^389649-1 Lennart 05 Jul 10
215038*5^392817-1 Lennart 06 Jul 10
60722*5^412259+1 SMartin 21 Jul 10
37714*5^448636+1 Lennart 28 Jul 10
96994*5^461748+1 Lennart 31 Jul 10
117434*5^472635+1 Lennart 2 Aug 10
51176*5^484669+1 Lennart 8 Aug 10
8644*5^493618+1 Lennart 10 Aug 10
37328*5^504675+1 Rune 15 Aug 10
341552*5^427478-1 StefanoD 23 Aug 10
261448*5^461217-1 Lennart 9 Sep 10
250216*5^460797-1 Rune 9 Sep 10
170446*5^468081-1 Lennart 11 Sep 10
254*5^911506-1 LTD 10 Oct 10
128552*5^525537+1 LTD 14 Oct 10
76322*5^485176-1 Rune 19 Oct 10
48394*5^490575-1 Rune 29 Oct 10
151026*5^559670 - 1 391198 p307 Dec 2010
3938*5^558032 - 1 390052 p304 Dec 2010
105782*5^551766 - 1 385673 p306 Dec 2010
183916*5^519597 - 1 363188 p304 Dec 2010
53542*5^515155 - 1 360083 p305 Dec 2010
The last five will be edited for format tomorrow!
[/CODE]

[URL="http://primes.utm.edu/primes/page.php?id=92876"]193786*5^306459-1[/URL] found by PCZ

[URL="http://primes.utm.edu/primes/page.php?id=92951"]325846*5^310371-1[/URL] found by rover

[URL="http://primes.utm.edu/primes/page.php?id=92983"]284422*5^312235-1[/URL] found by PCZ

[URL="http://primes.utm.edu/primes/page.php?id=93084"]291364*5^316439-1[/URL] PCZ

157672 · 5^333603-1 is Prime

Lennart

[url]http://primes.utm.edu/primes/page.php?id=93222[/url]

157672 · 5^333603-1 is Prime

Lennart

[B]68576 · 5^344598-1 Is Prime


Lennart
[/B]

282316 · 5^355063-1 Is Prime

Lennart

[B]156694 · 5^383789-1 Is Prime :smile:

Lennart
[/B]

[B]71084 · 5^387704-1 Is Prime.


Lennart
[/B]

[B]98038 · 5^389649-1 Is prime :smile:

Lennart
[/B]

[B]215038 · 5^392817-1 is Prime

Lennart
[/B]

Did you find 10 primes some days ago, and post them now one per day? :smile:

Congratz for this nice run.

[quote=Xentar;220749]Did you find 10 primes some days ago, and post them now one per day? :smile:

Congratz for this nice run.[/quote]

Thank's

I have reported them here when they was verified by top5000. :smile:

Lennart

No prime today? ;)

Lennart has reported 7 primes for this project so far this year!

The 12 primes reported for this project so far this year exceed the 10 (or 9 depending on which year you assign 227968*5^245975-1) primes reported for this project in 2008.

60722*5^412259+1
 

On the plus side (Sierpinski) of the house we have a new [URL="http://primes.utm.edu/primes/page.php?id=93660"]prime,[/URL] found by Steve Martin of Seti.USA.

37714 · 5^448636+1 is Prime
 

[B]37714 · 5^448636+1 is Prime

Lennart
[/B]

One more :)
 

[B]96994 · 5^461748+1 is Prime

Lennart :smile:
[/B]

117434*5^472635+1is Prime

Lennart

[B]51176 · 5^484669+1 is Prime

Lennart
[/B]

[QUOTE=Lennart;224455][B]51176 · 5^484669+1 is Prime

Lennart
[/B][/QUOTE]

Another prime for Lennart...his 11th this year for SR5!

Congrats!

Prime #12 For Lennart this year
 

[url]http://primes.utm.edu/primes/page.php?id=94113[/url]



8644*5^493618+1 is Prime :smile:

Prime #1 for Rune
 

Another prime! Congratulations to Rune on his 1st SR5 prime!

[URL="http://primes.utm.edu/primes/page.php?id=94228"]37328*5^504675+1[/URL]

Prime #1 for StefanoD
 

Congratulations to Stefano on his first S/R Base 5 prime!


[URL="http://primes.utm.edu/primes/page.php?id=94394"]341552*5^427478-1[/URL]

S/R Base 5 Primes
 

Prime #13 for Lennart
261448*5^461217-1

Prime #2 for Rune
250216*5^460797-1

Congratulations to both of you!

Keep them coming.

Another prime for Lennart...his 14th this year for SR5!

[B]170446*5^468081-1[/B]

Congrats!

This time an announcement for myself. Looks like the smallest k of the whole project was finished:

254*5^911506-1 is prime

[url]http://primes.utm.edu/primes/page.php?id=95347[/url]

Lets see what the officials have to say about it.

Congrats Lars on a monster top-100 prime! :smile:

For historical reference and accounting purposes both here and at CRUS for Riesel base 25, I should state here that this prime actually knocks out k=158750 for bases 5 and 25 because:

254*5^4-1 is prime
1270*5^3-1 is prime
6350*5^2-1 is prime
31750*5^1-1 is prime

-- and now since n must be >= 1 --
158750*5^911502-1 is prime

-- and finally for CRUS --
158750*25^455751-1 is prime

Congrats again! :-)


Gary

Its a good month for me:

128552*5^5525537+1 is prime

[url]http://primes.utm.edu/primes/page.php?id=95404[/url]

[QUOTE=ltd;233476]Its a good month for me:

128552*5^5525537+1 is prime

[url]http://primes.utm.edu/primes/page.php?id=95404[/url][/QUOTE]

Oops. You meant 128552*5^525537+1

:redface: Oops my fault. You are right.
But the wrong one would have been a real finding. :cool::wink:

Another prime! This time for Rune...his 3rd SR5 prime!

[URL="http://primes.utm.edu/primes/page.php?id=95516"]76322*5^485176-1[/URL] (339129 digits)

Another prime for Rune! His fourth for SR5.

48394*5^490575-1

[url]http://primes.utm.edu/primes/page.php?id=97122[/url]

and

[url]http://primes.utm.edu/primes/page.php?id=97144[/url]

Another 3. Details [URL="http://www.primegrid.com/forum_thread.php?id=2964"]here[/URL] and [URL="http://www.primegrid.com/forum_thread.php?id=2967"]here[/URL]