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2010-05-07, 16:35
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#375 |
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Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
588110 Posts |
Riesel base 275, k=22.
Primes attached. Remaining k's: 4*275^n-1 16*275^n-1 Base completed to 25K and released. |
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2010-05-08, 06:30
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#376 |
May 2008
Wilmington, DE
1011001001002 Posts |
Riesel 390
Riesel Base 390
Conjectured k = 137 Covering Set = 17, 23 Trivial Factors k == 1 mod 389(389) Found Primes: 134k's - File attached k=16 proven composite by partial algebric factors Conjecture Proven Last fiddled with by MyDogBuster on 2014-09-02 at 09:15 |
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2010-05-08, 07:18
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#377 |
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Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
5,881 Posts |
Riesel base 290, k=98.
Primes attached. Remaining k's: 19*290^n-1 64*290^n-1 71*290^n-1 81*290^n-1 Base completed to 25K and released. |
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2010-05-09, 15:28
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#378 |
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May 2008
Wilmington, DE
22·23·31 Posts |
Riesel 469
Riesel Base 469
Conjectured k = 516 Covering Set = 5, 47 Trivial Factors k == 1 mod 2(2) and k == 1 mod 3(3) and k == 1 mod 13(13) Found Primes: 154k's - File attached Remaining k's: Tested to n=25K 336*469^n-1 422*469^n-1 474*469^n-1 k=324 proven composite by partial algebraic factors Trivial Factor Eliminations: 99k's Base Released This concludes the factor 5's with b= 4 mod 5 with 4 exceptions. R124 CK = 3,730,449 R399 CK = 1,558,133,564 R624 CK = 569,819 R799 CK = 1,885,767,686,976 If anyone has 25 or 30 years to spare, R799 might be fun. 
Last fiddled with by MyDogBuster on 2014-09-02 at 09:15 |
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2010-05-09, 15:38
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#379 |
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May 2008
Wilmington, DE
22×23×31 Posts |
Sierp 463
Reserving Sierp 463 as new to n=25K
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2010-05-09, 16:48
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#380 |
Nov 2008
2×33×43 Posts |
Sierp base 263 taken to n=25K and released.
The conjectured k is 10 (covering set {3, 11}). Just one k left with no primes: 8*263^n+1 The primes are: 2*263^957+1 4*263^50+1 6*263^1+1 Edit: k weight = 366 (a toughie) Last fiddled with by MyDogBuster on 2010-05-09 at 18:23 |
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2010-05-09, 19:42
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#381 |
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Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
588110 Posts |
Serp base 260, ck=28
Base proven. Primes attached Last fiddled with by gd_barnes on 2010-05-10 at 08:46 Reason: ck=27 -> ck=28 |
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2010-05-09, 23:16
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#382 |
Jun 2008
Wollongong, .au
B716 Posts |
Sierp 328
Extended Sierpinski 328 from n=25K to 50K, k=27 remains.
Residues attached, base released. |
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2010-05-10, 06:38
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#383 |
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Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
5,881 Posts |
Now the rules are changed I can post these.
S274, CK=21, Base proven. S285, CK=12, Base proven. S296, CK=10, Base proven. Primes attached. If you need anything else I can post it later. |
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2010-05-10, 07:36
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#384 | |
May 2007
Kansas; USA
101000101000112 Posts |
Quote:
...glad to let Ian take these now. 
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2010-05-10, 11:37
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#385 | |
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May 2008
Wilmington, DE
22·23·31 Posts |
Quote:
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