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Old 2017-10-27, 08:42   #1288
Cruelty
 
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S10 tested till n=2.07M
R10 tested till n=1.83M
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Old 2017-11-02, 16:11   #1289
wombatman
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Default S26 update

S26 is currently tested up to n=929,643. No primes found. Continuing on to n=1M.
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Old 2017-11-19, 11:48   #1290
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Default S7/S15

Pu-uh, looks like its never finishing.
S7 still at 21,9K, very slow progress.
S15 at 13,49K, extreme slow progress but many primes. I expect that this will still take ~1 year until 25K.
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Old 2017-11-20, 23:29   #1291
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Quote:
Originally Posted by MisterBitcoin View Post
S15 at 13,49K, extreme slow progress but many primes. I expect that this will still take ~1 year until 25K.
Likely ~2-3 years unless you put more resources on it. It's already been 5 months and, on average, n=12.5K-25K will take 6-8 times as long as n<12.5K.

This comes from a general principle that I go by: If you are testing twice the n-range at twice the size, that is n=200K-400K vs. n=100K-200K, it will take 8 times as long. That's because it is twice as many tests and 4 times as long for each test. But since this is a conjecture effort with some k's being removed, it generally takes about ~6 times as long.

This is why I continually harp on people to not reserve so much work. Reserve smaller efforts and then extend the reservation if you are interested in continuing.
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Old 2017-11-25, 12:21   #1292
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S27 tested to n=2M (1.211-2M)

nothing found, 1 remain

Results emailed, Base released
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Old 2017-11-28, 02:21   #1293
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Reserving ks= 366 and 3224 to n=250K for R19.
If I, or someone else, is starting a sieve for the remaining at n=100K he can sieve up to N=250K.

Last fiddled with by MisterBitcoin on 2017-11-28 at 02:22
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Old 2017-12-02, 15:33   #1294
Cruelty
 
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S10 tested till n=2.09M
R10 tested till n=1.84M
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Old 2017-12-07, 10:16   #1295
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Quote:
Originally Posted by MisterBitcoin View Post
Reserving ks= 366 and 3224 to n=250K for R19.
If I, or someone else, is starting a sieve for the remaining at n=100K he can sieve up to N=250K.
k=366 reached n=250K, no prime. Releasing this k.

Code:
3224*19^217758-1 is prime! (278463 decimal digits, P = 3)  Time : 1199.356 sec.
That prime also proves k=3224 for R361.
The chance of prime in my range was ~6%, quite a lucky find.
Attached Files
File Type: txt k366.txt (118.4 KB, 177 views)
File Type: txt k3224.txt (41.9 KB, 76 views)

Last fiddled with by MisterBitcoin on 2017-12-07 at 10:17
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Old 2017-12-29, 18:05   #1296
wombatman
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S26 is completed to n=1M with no primes found. Gary, I'll be PM'ing you shortly for a refresher on which files you need. I'll also go ahead and prepare a sieve file up to n=2M.
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Old 2017-12-29, 18:28   #1297
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Quote:
Originally Posted by wombatman View Post
S26 is completed to n=1M with no primes found. Gary, I'll be PM'ing you shortly for a refresher on which files you need. I'll also go ahead and prepare a sieve file up to n=2M.
Wombatman, contact YOYO or MR Bitcoin: just prepare sieve file, YOYO can make very deep sieve file in just few days. And you can spent those days on other thing(s)
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Old 2017-12-29, 19:52   #1298
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Quote:
Originally Posted by wombatman View Post
S26 is completed to n=1M with no primes found. Gary, I'll be PM'ing you shortly for a refresher on which files you need. I'll also go ahead and prepare a sieve file up to n=2M.
I´m preparing the file, taking range n=1M-3M and pmax=5e15. Give me 2-3 weeks, PM me your mail that I can send you the sieve files when there done.
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