Riesel Primes k*2^n-1, k<300 [Part II] - Page 78

VBCurtis · 2015-02-18, 00:57

Reserving k = 249 and k = 109 at 2M.

249 is the k<300 with the lowest largest-known-prime, at 251036. I will test this k just until I find a prime, or lose interest.

VBCurtis · 2015-02-19, 06:28

Quote:

Originally Posted by VBCurtis

249 is the k<300 with the lowest largest-known-prime, at 251036. I will test this k just until I find a prime, or lose interest.

Well, that was fast. 249 has a prime at 2001627. I stopped the second core at 2055k, so I'll let the first core finish its 2000-2050 range and unreserve 249 at 2055k in a couple weeks.

Cruelty · 2015-02-28, 20:36

k=25 tested till n=3.34M
k=43 tested till n=4.32M
k=79 tested till n=2.84M
k=101 tested till n=4.46M
k=151 tested till n=3.93M

Kosmaj · 2015-03-01, 06:06

I just uploaded the updated k<300 status page. And sorry for the delay.

My recent progress:
k=21 at n=2890k
k=297 at n=2M

Thomas11 · 2015-03-24, 15:25

k=281 complete to n=2M, one prime found (281*2^1860862-1), releasing this k.

Taking k=293 from n=1850k to n=2M.

pinhodecarlos · 2015-03-28, 12:58

Latest RPS300 file.

Cruelty · 2015-03-31, 22:54

k=25 tested till n=3.37M
k=43 tested till n=4.37M
k=79 tested till n=2.87M
k=101 tested till n=4.5M
k=151 tested till n=3.95M

VBCurtis · 2015-04-01, 03:28

13 @ 3.11M
45 @ 2.15M
93 @ 1.72M
99 @ 2.1M
127@4.15M
167@1.77M
197@ 2M
201@ 1.77M
229@ 1.64M
231@ 1.57M
245@ 2.08M

Current resources are 15 haswell cores, 5ish older desktop cores. Each k below 2M has 2 or more cores on it until 2M is reached.

Thomas11 · 2015-04-01, 08:13

k=293 complete to n=2M, no primes, releasing.

Taking k=263 from n=1615k to n=2M.

Thomas11 · 2015-04-04, 11:58

k=263 complete to n=2M, one prime found: 263*2^1904406-1, releasing this k.

Taking k=233 from n=1710k to n=2M.

pinhodecarlos · 2015-04-19, 12:15

Latest RPS300 file.

2015-03-31, 22:54	#854
Cruelty May 2005 2³×7×29 Posts	status report k=25 tested till n=3.37M k=43 tested till n=4.37M k=79 tested till n=2.87M k=101 tested till n=4.5M k=151 tested till n=3.95M

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2015-02-18, 00:57	#848
VBCurtis "Curtis" Feb 2005 Riverside, CA 11404₈ Posts	Reserving k = 249 and k = 109 at 2M. 249 is the k<300 with the lowest largest-known-prime, at 251036. I will test this k just until I find a prime, or lose interest.

2015-02-28, 20:36	#850
Cruelty May 2005 2³·7·29 Posts	k=25 tested till n=3.34M k=43 tested till n=4.32M k=79 tested till n=2.84M k=101 tested till n=4.46M k=151 tested till n=3.93M

2015-03-01, 06:06	#851
Kosmaj Nov 2003 2×1,811 Posts	I just uploaded the updated k<300 status page. And sorry for the delay. My recent progress: k=21 at n=2890k k=297 at n=2M

2015-03-24, 15:25	#852
Thomas11 Feb 2003 2²·3²·53 Posts	k=281 complete to n=2M, one prime found (281*2^1860862-1), releasing this k. Taking k=293 from n=1850k to n=2M.

2015-04-01, 03:28	#855
VBCurtis "Curtis" Feb 2005 Riverside, CA 2²×1,217 Posts	13 @ 3.11M 45 @ 2.15M 93 @ 1.72M 99 @ 2.1M 127@4.15M 167@1.77M 197@ 2M 201@ 1.77M 229@ 1.64M 231@ 1.57M 245@ 2.08M Current resources are 15 haswell cores, 5ish older desktop cores. Each k below 2M has 2 or more cores on it until 2M is reached.

2015-04-01, 08:13	#856
Thomas11 Feb 2003 11101110100₂ Posts	k=293 complete to n=2M, no primes, releasing. Taking k=263 from n=1615k to n=2M.

2015-04-04, 11:58	#857
Thomas11 Feb 2003 2²·3²·53 Posts	k=263 complete to n=2M, one prime found: 263*2^1904406-1, releasing this k. Taking k=233 from n=1710k to n=2M.