S/R Base 5 Primes reported in 2013
 

174344*5^855138-1 Is Prime
[URL]http://primes.utm.edu/primes/page.php?id=110673[/URL]

Lennart

And another - what a great start to the year :)

162434*5^856004-1 is prime!

[URL="http://primes.utm.edu/primes/page.php?id=110682"]http://primes.utm.edu/primes/page.php?id=110682[/URL]

Here we go again :smile:


[URL]http://primes.utm.edu/primes/page.php?id=111834[/URL]

110488 · 5^917100 + 1

[QUOTE=Lennart;334925]Here we go again :smile:


[URL]http://primes.utm.edu/primes/page.php?id=111834[/URL]

110488 · 5^917100 + 1[/QUOTE]

[URL="http://primes.utm.edu/primes/page.php?id=111834"]TIFIFY[/URL]

And this is the first Sierpinski found for SR5.
Congratulation.

[URL]http://primes.utm.edu/primes/page.php?id=114281[/URL]

70082 · 5^936972 - 1 is Prime

Found by Scott Brown

Lennart

[URL="http://primes.utm.edu/primes/page.php?id=114317"]119878[/URL] · 5[SUP]1019645[/SUP] - 1 and
[URL="http://primes.utm.edu/primes/page.php?id=114319"]114986[/URL] · 5[SUP]1052966[/SUP] - 1

[QUOTE=Batalov;342399][URL="http://primes.utm.edu/primes/page.php?id=114317"]119878[/URL] · 5[SUP]1019645[/SUP] - 1 and
[URL="http://primes.utm.edu/primes/page.php?id=114319"]114986[/URL] · 5[SUP]1052966[/SUP] - 1[/QUOTE]

Congrats :) Nice findings.


Lennart

[QUOTE=Lennart;342401]Congrats :) Nice findings.


Lennart[/QUOTE]

Would you now remove those K from further processing on Prpnet?

[QUOTE=pepi37;342410]Would you now remove those K from further processing on Prpnet?[/QUOTE]


No !! We need to search to see that there are no smaller primes on those k.

Lennart

Right, not from PRPnet (the results start with n>=1,000,000).
But two K's can be excluded from the master 2M-5M sieve file.

I will upload the LLR residues to the sieve server (or I can email them).

This could save some time on the upcoming Challenge - quite a few results will be validated with one test with no-hassle-no-wait credit to the participants.

[url]http://www.primegrid.com/stats_sr5_llr.php[/url]

55154*5^1063213+1

Total: 8
 

[url]http://www.primegrid.com/stats_sr5_llr.php[/url]

[SIZE="7"]Total: 8[/SIZE]

[B]173198*5^1457792-1 is prime!
Total: 9
First SR5 Megabit Prime
[/B]

The total is not 9, really. More like ~25.
A simple UTM [URL="http://primes.utm.edu/primes/search_proth.php?base=5&number=300&plus=y&minus=y"]DB query[/URL] will show this:
[CODE] rank description digits who year comment
----- -------------------------------- ------- ----- ---- --------------
67 173198*5^1457792-1 1018959 L3720 2013
75 245114*5^1424104-1 995412 L3686 2013
76 175124*5^1422646-1 994393 L3686 2013
88 256612*5^1335485-1 933470 L259 2013
96 268514*5^1292240-1 903243 L3562 2013
109 97366*5^1259955-1 880676 L3567 2013
110 243944*5^1258576-1 879713 L3566 2013
120 84466*5^1215373-1 849515 L3562 2013
127 150344*5^1205508-1 842620 L3547 2013
141 1396*5^1146713-1 801522 L3547 2013
145 92182*5^1135262+1 793520 L3547 2013
147 17152*5^1131205-1 790683 L3552 2013
151 329584*5^1122935-1 784904 L3553 2013
162 305716*5^1093095-1 764047 L3547 2013
166 130484*5^1080012-1 754902 L3547 2013
175 55154*5^1063213+1 743159 L3543 2013
180 114986*5^1052966-1 735997 L3528 2013
184 243686*5^1036954-1 724806 L3549 2013
193 119878*5^1019645-1 712707 L3528 2013
208 97768*5^987383-1 690157 L1016 2013
233 70082*5^936972-1 654921 L3523 2013
237 102976*5^929801-1 649909 L3313 2013
248 110488*5^917100+1 641031 L3354 2013
[STRIKE] 252 254*5^911506-1 637118 p292 2010 [/STRIKE]
301 162434*5^856004-1 598327 L3410 2013
303 174344*5^855138-1 597722 L3354 2013 [/CODE]

and the 26th prime for the year was
37292 · 5^1487989 + 1
with 1040065 digits found by L3553 Dec 2013