Riesel Primes k*2^n-1, k<300 [Part II] - Page 95

ryanp · 2021-07-24, 00:03

Quote:

Originally Posted by gd_barnes

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.

I'm taking k=7 from n=5M to n=8M. Already found a hit.

gd_barnes · 2021-07-24, 21:37

k=21 is complete to n=3.5M; 1 prime found for n=2.89M-3.5M.

k=21 double-check is complete for n=1M-2.89M; 5 primes confirmed.

The k is released. Primes and results attached.

japelprime · 2021-07-27, 21:52

k=83 at n=3.6M and continuing

Trilo · 2021-09-09, 15:30

k=55 at n=3.45m.

Trilo · 2021-09-27, 15:30

Reserving k=21 from 3.5m

Building a new computer (Ryzen 5950x) on Friday excited to get it crunching!

kuratkull · 2021-10-01, 11:50

ongoing progress report:

k=193 at n=5M
k=195 at n=5M
k=197 at n=5M

Trilo · 2021-10-21, 23:53

In contact with ryanp as it seems he was working on k=21 before me. Reserving k= 81 instead.

diep · 2021-10-21, 23:58

Quote:

Originally Posted by Trilo

In contact with ryanp as it seems he was working on k=21 before me. Reserving k= 81 instead.

k=81 might be a good one! Good luck! (had told Paul to jump on it - too late now!)

Trilo · 2021-10-22, 02:11

after speaking with ryanp he completed k= 21 from n=6-7m. I'll keep k=21 reserved along with k=81.

k=55 at n= 3.52m.

Quote:

Originally Posted by diep

k=81 might be a good one! Good luck! (had told Paul to jump on it - too late now!)

Only time will tell ;)

unconnected · 2021-11-11, 01:08

Status update:
k=29 @ 7M
k=253 @ 6.2M

japelprime · 2021-11-14, 12:11

k=83 at n=3.7M and continuing.

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2021-07-27, 21:52	#1037
japelprime "Erling B." Dec 2005 150₈ Posts	k=83 at n=3.6M and continuing

2021-09-09, 15:30	#1038
Trilo "W. Byerly" Aug 2013 81*2^3174353-1 7·19 Posts	k=55 at n=3.45m.

2021-09-27, 15:30	#1039
Trilo "W. Byerly" Aug 2013 81*2^3174353-1 7·19 Posts	Reserving k=21 from 3.5m Building a new computer (Ryzen 5950x) on Friday excited to get it crunching!

2021-10-01, 11:50	#1040
kuratkull Mar 2007 Estonia 225₈ Posts	ongoing progress report: k=193 at n=5M k=195 at n=5M k=197 at n=5M

2021-10-21, 23:53	#1041
Trilo "W. Byerly" Aug 2013 81*2^3174353-1 7×19 Posts	In contact with ryanp as it seems he was working on k=21 before me. Reserving k= 81 instead.

2021-11-11, 01:08	#1044
unconnected May 2009 Moscow, Russia 5556₈ Posts	Status update: k=29 @ 7M k=253 @ 6.2M

2021-11-14, 12:11	#1045
japelprime "Erling B." Dec 2005 2³·13 Posts	k=83 at n=3.7M and continuing.