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Old 2009-07-06, 15:55   #518
MyDogBuster
 
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2719*2^438181-1 is prime
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Old 2009-07-07, 19:06   #519
MrOzzy
 
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One more for me :-)

Added 89165 : 1785*2^662755-1 (199513 digits)

My biggest one so far :-)
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Old 2009-07-07, 21:18   #520
gd_barnes
 
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Nice one MrOzzy. :-)

3 more teeny ones for me:
2331*2^439550-1 is prime
2463*2^439758-1 is prime
2415*2^439954-1 is confirmed prime

2259*2^440977-1 is prime

Last fiddled with by mdettweiler on 2009-09-21 at 02:23 Reason: merged (cleanup)
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Old 2009-07-08, 22:48   #521
Flatlander
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2019*2^432436-1 is prime.

Added 89160 : 2785*2^438993-1 (132154 digits)

Added 89187 : 2481*2^441018-1 (132764 digits)

Added 89234 : 2371*2^443177-1 (133413 digits)

Added 89345 : 2119*2^450879-1 (135732 digits)

2445*2^452044-1 is confirmed prime.

Added 89395 : 2587*2^455325-1 (137070 digits)
Added 89396 : 2241*2^455321-1 (137069 digits)


Added 89408 : 2761*2^455435-1 (137104 digits)

Added 89417 : 2635*2^456353-1 (137380 digits)

Added 89420 : 2461*2^456759-1 (137502 digits)

Added 89485 : 2241*2^461261-1 (138857 digits)

Added 89501 : 2967*2^462413-1 (139204 digits)

Already in database 87196 : 2933*2^466692-1
Added 89550 : 2117*2^466770-1 (140516 digits)

Last fiddled with by mdettweiler on 2009-09-21 at 02:43 Reason: merged (cleanup)
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Old 2009-07-09, 12:05   #522
Mini-Geek
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"Tim Sorbera"
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2619*2^440615-1 is prime!

The first top 5000 prime I've found since 2009-01-16. (had bad luck on the individual k's and I've been doing some sieving and factoring)
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Old 2009-07-09, 20:38   #523
gd_barnes
 
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Congrats Tim. I know how those rough stretches go.

In the mean time:
2527*2^441809-1 is prime
2255*2^441910-1 is prime
2673*2^442256-1 is prime
2577*2^442697-1 is prime

2243*2^444362-1 is prime

2385*2^444970-1 is confirmed prime
2581*2^444995-1 is prime
2331*2^445107-1 is prime

Last fiddled with by mdettweiler on 2009-09-21 at 02:28 Reason: merged (cleanup)
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Old 2009-07-14, 08:23   #524
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2971*2^445233-1 is prime

2031*2^446470-1 is prime

2149*2^447045-1 is prime
---
2479*2^447743-1 is prime

2995*2^447869-1 is prime

2801*2^448678-1 is prime

2491*2^449607-1 is prime

Last fiddled with by mdettweiler on 2009-09-21 at 02:34 Reason: merged (cleanup) (note that the stuff after the --- was later and not part of the "triplet" Gary commented on)
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Old 2009-07-16, 20:54   #525
gd_barnes
 
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Nice triplet Bruce!

One for me:
2343*2^447819-1 is prime
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Old 2009-07-18, 20:50   #526
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I caught one of those lucky runs in the last 24 hours:

2943*2^448416-1 is confirmed prime
2633*2^449014-1 is prime
2373*2^449354-1 is prime
2707*2^449497-1 is prime
2305*2^449529-1 is prime
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Old 2009-07-19, 20:35   #527
gd_barnes
 
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2187*2^449776-1 is confirmed prime
2799*2^450032-1 is prime
2853*2^450044-1 is prime
2781*2^450171-1 is prime
2687*2^450258-1 is prime

2799*2^452752-1 is prime
2449*2^452879-1 is prime
2859*2^453059-1 is prime
2775*2^453293-1 is confirmed prime
2651*2^453734-1 is prime

Last fiddled with by mdettweiler on 2009-09-21 at 02:21 Reason: merged (cleanup)
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Old 2009-07-23, 23:41   #528
vaughan
 
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1435*2^663343-1 is prime

2511*2^455671-1 is new prime

2757*2^457482-1 is prime

2909*2^457748-1 is prime

2961*2^457933-1 is prime.

2623*2^459055-1 is prime.

2209*2^460565-1 is prime
2599*2^460741-1 is prime
2915*2^461042-1 is prime

2629*2^462615-1 is prime
2825*2^462632-1 is prime

2901*2^463754-1 is prime

2805*2^464446-1 confirmed prime.

2795*2^465726-1 is prime

2217*2^466442-1 is prime

2205*2^468111-1 is prime

2741*2^468594-1 confirmed prime

2001*2^469931-1 is prime

2169*2^470391-1 is prime

2963*2^470580-1 is prime
2385*2^470679-1 confirmed prime
2525*2^470704-1 is prime

Last fiddled with by mdettweiler on 2009-09-21 at 02:31 Reason: merged (cleanup)
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