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-   -   Bases 251-500 reservations/statuses/primes (https://www.mersenneforum.org/showthread.php?t=12993)

MyDogBuster 2011-04-23 15:31

S352
 
Sierp Base 352
Conjectured k = 7990
Covering Set = 3, 61, 97
Trivial Factors k == 2 mod 3(3) and k == 12 mod 13(13)

Found Primes: 4868k's - File emailed

Remaining: 40k's - Tested to n=25K - File emailed

Trivial Factor Eliminations: 3073k's

MOB Eliminations: 6k's - File emailed

GFN: 1k - File emailed
352

Base Released

henryzz 2011-04-25 14:36

reserving R360 to 25k as new

henryzz 2011-04-25 18:45

[QUOTE=henryzz;259550]reserving R360 to 25k as new[/QUOTE]
196*360^n-1
529*360^n-1
1444*360^n-1
3481*360^n-1
all have algebraic factors(difference of squares) on the even side. The odd side can't be removed.
I assume I have everything. Srsieve told me about these.

henryzz 2011-04-25 19:46

[QUOTE=henryzz;259569]196*360^n-1
529*360^n-1
1444*360^n-1
3481*360^n-1
all have algebraic factors(difference of squares) on the even side. The odd side can't be removed.
I assume I have everything. Srsieve told me about these.[/QUOTE]
Found these using hiddenpowers.pl
40*360^n-1
640*360^n-1
have algebraic factors(difference of squares) on odd side. The even side can't be removed.

gd_barnes 2011-04-25 19:54

R360 does not have any k's that can be removed due to full or partial algebraic factors. You can remove any even n's or odd n's from your sieve file if just the one side (odd or even) contains algebraic factors but the k's will still have to be searched.

MyDogBuster 2011-04-25 19:59

S335
 
S335 tested 100K-200K - Nothing found

Results emailed - Base released

MyDogBuster 2011-04-28 19:18

R398
 
R398 tested n=100K-200K - Nothing found

Results emailed - Base released

paleseptember 2011-04-28 22:07

S387
 
Whilst the neverending S928 tests grind on, I'll take S387 out for a look. 47 k-values remaining at n=1000.

gd_barnes 2011-04-29 05:16

Serge reported in an Email dated April 28th the following statuses:

S257 is at n=183K, continuing to n=200K
S406 is at n=155.3K, continuing to n=160K
S461 is at n=187K, continuing to n=200K
S467 is at n=202.7K, continuing to n=210K

No primes to report.

MyDogBuster 2011-04-29 15:48

Reservations
 
Reserving the following 1kers to n=200K

R362
S263 S428

MyDogBuster 2011-05-03 23:46

S287
 
Sierp Base 287
Conjectured k = 7142
Covering Set = 3, 5, 17, 457
Trivial Factors k == 1 mod 2(2) and k == 10 mod 11(11) and k == 12 mod 13(13)

Found Primes: 2860k's - File emailed

Remaining: 130k's - Tested to n=25K - File emailed

Trivial Factor Eliminations: 575k's

MOB Eliminations: 5k's - File emailed

Base Released


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