mersenneforum.org reserving a few k values
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 2014-05-17, 16:48 #1 Trilo     "W. Byerly" Aug 2013 1423*2^2179023-1 2×47 Posts reserving a few k values Hello, I am reserving k= 4207, 4329, 4347, 4431 so far k= 4207 tested up to 137k with N=26065 as prime. I will update this with my progress. Last fiddled with by Trilo on 2014-05-17 at 16:48
 2014-05-18, 15:07 #2 Trilo     "W. Byerly" Aug 2013 1423*2^2179023-1 2×47 Posts 4207 tested up to 310k with 26065 173153 as prime n's. 4329 tested up to 160k with the following prime n: 37045 46787 59620 65896 71785 91267 103503 132735 151504 4347 tested up to 160k with the following prime n: 20468 20750 24745 27278 28982 31585 33250 51002 111125 4431 tested up to 160k with the following n as prime: 21441 22417 31963 31969 50089 53511 76069
 2014-05-23, 02:22 #3 Trilo     "W. Byerly" Aug 2013 1423*2^2179023-1 2×47 Posts Update: 4207: None [531k] 4329: 162585, 167804, 253699 [260k] 4347: 204833, 234752, 276222 [278k] 4431: None [272k]
 2014-05-28, 14:17 #4 Trilo     "W. Byerly" Aug 2013 1423*2^2179023-1 2·47 Posts k=20055 also taking k=20055, already have it tested to ~80k on several cores: 30838, 35343, 36155, 36923, 40674, 41897, 44431, 47145, 59242, 69105, 69398, 72005, 77410
 2014-10-03, 00:48 #5 Trilo     "W. Byerly" Aug 2013 1423*2^2179023-1 2·47 Posts Status update Update: 4207: None [851k] 4329: 263133, 340355, 343403 [427k] 4347: 292512, 330224 [454k] 4431: 293087, 309253, 402299, 410231 [444k] Reserving k= 1423 from n= 1M- n= 2M. Already tested to n= 1.25M primes: 1423*2^1205415- 1 (362, 870 digits) Also unreserving k= 20055 tested up to 100k no new primes from last report.
 2014-10-12, 04:05 #6 Trilo     "W. Byerly" Aug 2013 1423*2^2179023-1 2·47 Posts 1423 is now at 1.54M with no new primes.
 2014-11-10, 16:32 #7 Trilo     "W. Byerly" Aug 2013 1423*2^2179023-1 10111102 Posts 1423 is at n= 2M
 2015-09-27, 23:20 #8 Trilo     "W. Byerly" Aug 2013 1423*2^2179023-1 2×47 Posts I would like to reserve 1423 on to 3M, and have started testing.

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