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Old 2007-01-22, 13:36   #89
ValerieVonck
 
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Default k=686701125

686701125*2^59037 - 1 is prime! 17781 digits
686701125*2^61564 - 1 is prime! 18542 digits
686701125*2^61743 - 1 is prime! 18596 digits
686701125*2^71904 - 1 is prime! 21655 digits
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Old 2007-01-24, 14:28   #90
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Code:
  686701125*2^77984 - 1 is prime!  23485 digits
  686701125*2^82487 - 1 is prime!  24840 digits
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Old 2007-01-31, 21:21   #91
ValerieVonck
 
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Default k=686701125

Code:
  686701125*2^85355  -1 is prime!  25704 digits
  686701125*2^86208  -1 is prime!  25961 digits
  686701125*2^92474  -1 is prime!  27847 digits
  686701125*2^101321 -1 is prime!  30510 digits
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Old 2007-02-21, 06:07   #92
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475977645 199782 is prime (60150 digits)
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Old 2007-03-02, 11:03   #93
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Default new best k found...

For k=37850187375 (Nash weight: 7261) the 100th prime appeared at n=13719

Here is the list of n which yield primes up to n=24000:
Code:
2, 5, 13, 16, 19, 20, 41, 56, 57, 64, 66, 74, 90, 97, 100, 107, 130,
137, 145, 147, 149, 171, 172, 178, 208, 241, 258, 301, 302, 318, 330,
331, 386, 439, 460, 462, 526, 529, 556, 558, 563, 625, 626, 628, 666,
699, 797, 804, 890, 907, 928, 968, 1050, 1117, 1247, 1304, 1453, 1584,
1782, 1788, 2115, 2193, 2239, 2371, 2439, 2533, 2789, 2827, 2984, 3044,
3382, 3568, 3633, 3884, 3900, 3909, 4406, 4426, 5833, 6241, 6283, 6325,
6580, 6596, 6714, 7621, 7727, 7968, 8323, 8817, 9002, 9258, 9833, 11742,
11868, 12248, 12294, 12754, 13340, 13719, 15527, 15913, 16323, 16554,
19362, 19802, 20013, 22376

Last fiddled with by Thomas11 on 2007-03-02 at 11:05
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Old 2007-03-07, 07:30   #94
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475977645*2^207784-1 (62558 digits)
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Old 2007-03-13, 17:03   #95
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k=19217385 tested from 50k to 70k.
There are primes for the following n:
60121
62263
64849
66746 <----- 100th prime
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Old 2007-03-19, 06:19   #96
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Default k=228461805

I decided to sieve and LLR some smaller N's for my K, which is already being sieved and LLR'd from 300k-500k.

228461805*2^102923-1 is prime! (30992 digits)
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Old 2007-03-19, 19:08   #97
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I am currently working on 2 k's :

11069*2^n-1 : (on other machine) done until 450k
21879*2^n-1 : 28, 232, 244, 292, 448, 2068, 17548, 64288 ; done until 300k
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Old 2007-03-21, 06:50   #98
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475977645*2^218689-1 is prime (65841 digits)
tested now from n=0-220k and n=250k-354k
99 primes found at all
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Old 2007-04-10, 07:49   #99
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475977645*2^232257-1 is prime
tested now from n=0-236k and n=250k-371k
100 primes found at all
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