mersenneforum.org Riesel Primes k*2^n-1, k<300 [Was "k=1"]
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 2005-01-08, 15:17 #287 Kosmaj     Nov 2003 70468 Posts Keller Forgive me instead to reply to your post I pressed "Edit", deleted your post and typed in my reply. You said you would like to cancel k=195 because it has a listed prime at n=311k and work on k=231 in the 200-400k range instead, is that right? I'm not sure is this the k you mentined. Last fiddled with by Kosmaj on 2005-01-08 at 15:28
 2005-01-08, 17:10 #288 Keller   May 2004 348 Posts Yes I would like to work on k=231 200000
 2005-01-10, 18:46 #289 Harvey563     Apr 2004 3×61 Posts ns from 200000 to 210000 I have checked & completed the following k values from 200000 to 210000: 93, 95, 99, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 151, 153, 163, 165, 167, 219, 221, 223, 227, 235, 237, & 239, and found only 93*2^203728-1 and 93*2^205158-1 prime. I am continuing with 107, 115, 169, 173, 175, 177, 179, 181, 185, 187 & 233 from 200000 to 210000. Harvey563
 2005-01-12, 19:24 #290 Harvey563     Apr 2004 18310 Posts update, ns from 200000 to 210000 I have completed k= 107, 169,173, 175, 177, 179, 181, 185, 187, 229, and 233 from 200000 to 210000, and found only 229*2^207863-1 prime. I am continuing with 115 and 125 to 210000. Harvey563
 2005-01-13, 15:50 #291 Harvey563     Apr 2004 3·61 Posts update, 115 & 125 I have completed 115 & 125 from 200000 to 210000, no primes. I am also done with 243 at 230000. Harvey563
 2005-01-15, 05:42 #292 jocelynl   Sep 2002 2·131 Posts I'm reserving k=247 Joss
 2005-01-16, 07:23 #293 JCS   Nov 2004 Canada 510 Posts A status update: k=9, at 801k. No new primes since 503k. k=33, complete to 500k. k=105, complete to 500k (prime for n=484658 and n=472430) k=117, at 438k. No new primes. k=129, at 253k, n=214985 is prime!
 2005-01-16, 11:20 #294 Thomas11     Feb 2003 22×32×53 Posts status k=11 and k=29 This is my status update: k=11, at n=1M, no new primes. k=29, at n=1.15M, no new primes. Continuing both... -- Thomas
 2005-01-16, 21:58 #295 Keller   May 2004 22×7 Posts Reserving k=237 from 210k to 500k and k=241 from 230k to 500k
 2005-01-19, 06:00 #296 jocelynl   Sep 2002 4068 Posts k=247 is done to 400k and is available - no prime found. Joss
 2005-01-22, 20:35 #297 Harvey563     Apr 2004 3·61 Posts reserve 91 Reserving 91 from 210000 to 300000. Harvey563

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