Progress update
 

S 332
K4 at 424K
K16 at 300K
K31 at 300K

R321 tested to n=500k (200-500k)

nothing found, 1 remain

Results emailed - Base released

Reserving S263 to n=500k (350-500k) for BOINC

S263 tested to n=500k (350-500k)

nothing found, 1 remain

Results emailed - Base released

S287
 

S287 fully tested n=80-85k
PFGW version 3.7.7

Prime found for 1k:
1292*287^81511+1

95 k's remain.
Testing continues to n=100k

For 75k<n<100k using P1e6 weight I calculated:
k=1292 had 8.24% chance of prime, so I found 78th hardest k remaining

Reserving 41*264^n+1
 

Hi

I'd like to test this candidate.
I'll start with a small range (200k-210k) to get a feeling for this but I think I'll continue up to highe values.

Christian

Progress update
 

S 332
K4 at 460K
K16 at 320K
K31 at 320K

Reserving S263 to n=1M (500k-1M) for BOINC

R253 tested to n=1M (500k-1M)

nothing found, 1 remain

Results emailed - Base released

S287
 

S287 fully tested n=85-90.3k
PFGW version 3.7.7

Prime found for 4k's:
4474*287^86350+1
3754*287^86670+1
5266*287^89464+1
2096*287^90201+1

91 k's remain.
Testing continues to n=100k

For 75k<n<100k using P1e6 weight I calculated:
k=4474 had 9.07% chance of prime, so I found 85th hardest k remaining (of 95)
k=3754 had 6.74% chance of prime, so I found 56th hardest k remaining (of 95)
k=5266 had 5.52% chance of prime, so I found 39th hardest k remaining (of 95)
k=2096 had 10.33% chance of prime, so I found 91st hardest k remaining (of 95)

Reserving S393 to n=100k (50-100k) for BOINC