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Old 2022-10-12, 19:21   #177
Grotex
 
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I reserve M87691 cofactor (prp26371)
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Old 2022-10-14, 06:53   #178
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Quote:
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I reserve M87691 cofactor (prp26371)
Drop it
I have only quad thread laptop

Last fiddled with by Grotex on 2022-10-14 at 06:55
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Old 2022-10-22, 00:24   #179
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Ok, will do M87691 cofactor (prp26371)
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Old 2022-10-22, 01:58   #180
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Quote:
Originally Posted by Batalov View Post
Ok, will do M87691 cofactor (prp26371)
Ryan said he'd do it in this post: https://mersenneforum.org/showpost.p...&postcount=125 Perhaps the task lapsed. (I certified cofactor of M86137 with Primo.)
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Old 2022-10-22, 08:05   #181
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Quote:
Originally Posted by sweety439 View Post
(71^16384+1)/2, 30331 decimal digits

this PRP is <SNIP>
Please use this thread to reserve/unreserve and report outcomes of ECPP work,

Do not advertise numbers in order to try and get other people to do work for you. Just stop it, You have been warned many times about this kind of behaviour. Consider this the last warning.

NOTE: Offending post moved to thread for off-topic posts in author's blog.

Last fiddled with by Dr Sardonicus on 2022-10-22 at 13:00
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Old 2022-11-25, 05:06   #182
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Quote:
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After running about 1 hour per test for the first 10 tests, the program terminated after 3 days.

I am now attempting the slightly larger M174533 cofactor (prp52494) instead
Done: Certified and registered at The Prime Pages and factorDB.

Reserving the M216317 cofactor (prp65046).

Last fiddled with by paulunderwood on 2022-11-25 at 05:07
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Old 2022-11-28, 08:03   #183
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Quote:
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Reserving the M216317 cofactor (prp65046).
This number failed at Size [8] 215618 bits with: mu_div_qr GNU MP assertion failed cy == 0.

I am now attempting to certify the cofactor of M221509 (prp66673).

Last fiddled with by paulunderwood on 2022-11-28 at 09:47
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Old 2022-11-28, 18:49   #184
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Quote:
Originally Posted by paulunderwood View Post
This number failed at Size [8] 215618 bits with: mu_div_qr GNU MP assertion failed cy == 0.

I am now attempting to certify the cofactor of M221509 (prp66673).
The same error has occurred at Size [2]. Where is this bug?

Taking W127031.

Last fiddled with by paulunderwood on 2022-11-28 at 18:56
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Old 2022-11-28, 19:04   #185
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Quote:
Originally Posted by paulunderwood View Post
The same error has occurred at Size [2]. Where is this bug?

Taking W127031.
Primo seems to have a limit of 160000 bits
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Old 2022-11-28, 19:06   #186
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Quote:
Originally Posted by sweety439 View Post
Primo seems to have a limit of 160000 bits
This is Enge's ecpp-mpi program.
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Old 2022-11-28, 19:11   #187
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Quote:
Originally Posted by paulunderwood View Post
This is Enge's ecpp-mpi program.
OK, also you can see https://oeis.org/A092559, current the larger prime factor of 2^A092559(n)+1 have been proven prime for all a(n) up to a(52) = 117239, why you skip a(53) = 120788 and prove a(54) = 127031?
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