Riesel Primes k*2^n-1, k<300 [Part II] - Page 94

gd_barnes · 2021-03-27, 05:47

k=213 is complete to n=2M; 3 previously found primes confirmed and no new primes for n=1M-2M; the k is released.

Primes/residues added to double-check thread post #70.

All k<400 are now at n>=2M. :-)

gd_barnes · 2021-04-11, 17:38

k=255 double-check is complete to n=2M; 3 previously found primes confirmed for n=1M-2M; the k is released.

gd_barnes · 2021-04-20, 01:38

Quote:

Originally Posted by MooMoo2

k=81 is complete to n=2031K.

Residues are attached, and I'm continuing with it and taking k=161.

edit: No primes were found.

MooMoo,

This is from 2013. Can you give us an update on k=81? Are you still working on it? Thanks.

Gary

MooMoo2 · 2021-04-20, 05:53

Quote:

Originally Posted by gd_barnes

MooMoo,

This is from 2013. Can you give us an update on k=81? Are you still working on it? Thanks.

Gary

No, I released it later that year:
https://www.mersenneforum.org/showpo...&postcount=752

gd_barnes · 2021-04-20, 08:23

Quote:

Originally Posted by MooMoo2

No, I released it later that year:
https://www.mersenneforum.org/showpo...&postcount=752

Ah. The Wiki was wrong. I see that it is now updated. Thanks.

gd_barnes · 2021-04-28, 05:36

Quote:

Originally Posted by Trilo

unreserving k=195 at n= 2.03M

reserving k= 55, 59 and 75

Trilo,

From July 2017...are you still working on k=59 and 75? If so can you provide an update? Thanks.

Gary

MooMoo2 · 2021-05-05, 03:25

Quote:

Originally Posted by MooMoo2

k=39 is complete to n=4.848M. No new primes found, and I'm continuing

The results file is attached.

k=39 is now at n=5.256M. No new primes found, and I'm continuing.

The results file is attached.

kar_bon · 2021-05-06, 08:09

Checked 2M<n<2.1M for k=85 to fill missing range: prime at n=2087651 confirmed.

gd_barnes · 2021-05-10, 05:46

After several attempts to contact Kosmaj followed by a several week wait and a discussion with Dave and Thomas, it was decided to release Kosmaj's reservations for k=7, 21, and 77.

Therefore:
Reserving k=7 to n=5M including a double-check for n=1M-4.23M.
Reserving k=21 to n=3.5M including a double-check for n=1M-2.89M.

Double-checking for k=7 is already at n=~4.07M and will be done to n=4.23M in 3-4 days...then continuing to n=5M. No primes found.

k=77 is available with a test limit of n=2.18M.

gd_barnes · 2021-06-17, 23:07

k=7 is complete to n=5M; double-check is complete for n=1M-4.23M. No primes found for n=1M-5M. The k is released. Results attached.

This is likely the longest currently running n-range without a prime for k<300.

Trilo · 2021-07-14, 22:09

k=55 at 3.04M.

2021-03-27, 05:47	#1024
gd_barnes "Gary" May 2007 Overland Park, KS 2²·3,011 Posts	k=213 is complete to n=2M; 3 previously found primes confirmed and no new primes for n=1M-2M; the k is released. Primes/residues added to double-check thread post #70. All k<400 are now at n>=2M. :-) Last fiddled with by gd_barnes on 2021-03-27 at 05:48

2021-05-06, 08:09	#1031
kar_bon Mar 2006 Germany 5726₈ Posts	k=85 Checked 2M<n<2.1M for k=85 to fill missing range: prime at n=2087651 confirmed.

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2021-04-11, 17:38	#1025
gd_barnes "Gary" May 2007 Overland Park, KS 10111100001100₂ Posts	k=255 double-check is complete to n=2M; 3 previously found primes confirmed for n=1M-2M; the k is released.

2021-05-10, 05:46	#1032
gd_barnes "Gary" May 2007 Overland Park, KS 12044₁₀ Posts	After several attempts to contact Kosmaj followed by a several week wait and a discussion with Dave and Thomas, it was decided to release Kosmaj's reservations for k=7, 21, and 77. Therefore: Reserving k=7 to n=5M including a double-check for n=1M-4.23M. Reserving k=21 to n=3.5M including a double-check for n=1M-2.89M. Double-checking for k=7 is already at n=~4.07M and will be done to n=4.23M in 3-4 days...then continuing to n=5M. No primes found. k=77 is available with a test limit of n=2.18M.

2021-07-14, 22:09	#1034
Trilo "W. Byerly" Aug 2013 81*2^3174353-1 7·19 Posts	k=55 at 3.04M.