Riesel Primes k*2^n-1, k<300 [Was "k=1"] - Page 45

MooooMoo · 2006-09-12, 03:27

Some updates on k=19:

- I'm at k=682,000. I'll post the residues once I get past 700,000.
- Progress has been slow because of more time spent sieving. 517700-600000 was sieved to only 10 billion

, while 600K-680K was sieved to 179 billion. Currently, I'm sieving 682K-5682K, and I'm at 702 billion.

I'll continue sieving for another week or so, and then I'll be LLR testing that range for a looong time..........

Of course, I'll donate the file of pre-sieved candidates to RPS if I get bored before finishing the range.

Cruelty · 2006-09-12, 11:38

Quote:

Originally Posted by MooooMoo

Currently, I'm sieving 682K-5682K, and I'm at 702 billion.

Do you intend to test this "k" till n=5*10^6? How many candidates is there left per range of n=1000?

Quote:

Originally Posted by MooooMoo

I'll continue sieving for another week or so, and then I'll be LLR testing that range for a looong time..........

I don't know how heavy this k is, but in my case, I am testing k=25, which sieved to 3,3T @ 1000000<n<800000 leaves me with ~37 candidates per every range of n=1000, and it will take me several months (5-6) to complete it on 2.2GHz A64 machine running 24/7...

MooooMoo · 2006-09-13, 00:07

Quote:

Originally Posted by Cruelty

Do you intend to test this "k" till n=5*10^6? How many candidates is there left per range of n=1000?

I don't know how heavy this k is, but in my case, I am testing k=25, which sieved to 3,3T @ 1000000<n<800000 leaves me with ~37 candidates per every range of n=1000, and it will take me several months (5-6) to complete it on 2.2GHz A64 machine running 24/7...

I'm intending to test the k until at least 2M. I picked the range 682K-5682K instead of 682K-2000K so that I don't have to sieve all over again if I decide to LLR past 2M.

There are about 31 candidates per range of n=1000 for my k.

Cruelty · 2006-09-13, 19:37

k=101 tested till n=900000.
I'm still working on it... c'mon primes... stop hiding

grobie · 2006-09-14, 00:11

k=83 tested to 536k (No Primes) unreserving this one.

Flatlander · 2006-09-15, 20:41

Tested to 500,000. No more primes... yet.

Kosmaj · 2006-09-16, 08:11

Rob kindly informed me that he is still working on k=243=3^5. So far he tested the following ranges: 300-400k, 650-745k, and 800k-1M.

He found primes at n = 387836, 670891, and 744442.

He is now working on gaps in the 260-800k range and on n>1M.

Kosmaj · 2006-09-17, 04:56

Congrats to Bo (L6) on a nice, megabit prime:
289*2^1098117-1 (330569 digits)

Appearantly, he checked k=289 continuously at least from n=500k but there is no way to know for certain because he is not in touch with us nor does he report his completed ranges to Wilfrid Keller. This is his 5th k=289 prime.

Cruelty · 2006-09-20, 09:55

k=137 tested till n=1000000, moving further

Cruelty · 2006-09-27, 05:58

k=101 tested till n=1000000, no further primes to report - releasing this "k"

MooooMoo · 2006-09-28, 06:34

k=19 is tested to n=700K, and I'm continuing with this k.

The residues from 660K-700K are attached. No primes are in that range

2006-09-15, 20:41	#490
Flatlander I quite division it "Chris" Feb 2005 England 100000011101₂ Posts	k=35 Tested to 500,000. No more primes... yet.

2006-09-16, 08:11	#491
Kosmaj Nov 2003 2×1,811 Posts	k=243 Rob kindly informed me that he is still working on k=243=3^5. So far he tested the following ranges: 300-400k, 650-745k, and 800k-1M. He found primes at n = 387836, 670891, and 744442. He is now working on gaps in the 260-800k range and on n>1M.

2006-09-17, 04:56	#492
Kosmaj Nov 2003 2×1,811 Posts	k=289 Congrats to Bo (L6) on a nice, megabit prime: 289*2^1098117-1 (330569 digits) Appearantly, he checked k=289 continuously at least from n=500k but there is no way to know for certain because he is not in touch with us nor does he report his completed ranges to Wilfrid Keller. This is his 5th k=289 prime.

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2006-09-12, 03:27	#485
MooooMoo Apprentice Crank Mar 2006 111000110₂ Posts	Some updates on k=19: - I'm at k=682,000. I'll post the residues once I get past 700,000. - Progress has been slow because of more time spent sieving. 517700-600000 was sieved to only 10 billion , while 600K-680K was sieved to 179 billion. Currently, I'm sieving 682K-5682K, and I'm at 702 billion. I'll continue sieving for another week or so, and then I'll be LLR testing that range for a looong time.......... Of course, I'll donate the file of pre-sieved candidates to RPS if I get bored before finishing the range.

2006-09-13, 19:37	#488
Cruelty May 2005 2³×7×29 Posts	k=101 tested till n=900000. I'm still working on it... c'mon primes... stop hiding

2006-09-14, 00:11	#489
grobie Sep 2005 Raleigh, North Carolina 337 Posts	k=83 tested to 536k (No Primes) unreserving this one.

2006-09-20, 09:55	#493
Cruelty May 2005 2³·7·29 Posts	k=137 tested till n=1000000, moving further

2006-09-27, 05:58	#494
Cruelty May 2005 658₁₆ Posts	k=101 tested till n=1000000, no further primes to report - releasing this "k"