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11/3/24

New Mersenne Prime

Thanks to Batalov again: {"status":"C", "k":1, "b":2, "n

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New Mersenne Prime

Thanks to Batalov again: {"status":"C", "k":1, "b":2, "n

11/3/24

7/11/20

26-digit factor of (M+2)82589933 by ECM by mprime287-OSX

[Sat Jul 11 19:21:00 2020] 2^82589933+1/3/17973642059656480077259129 is not prime. RES64:

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26-digit factor of (M+2)82589933 by ECM by mprime287-OSX

[Sat Jul 11 19:21:00 2020] 2^82589933+1/3/17973642059656480077259129 is not prime. RES64:

7/11/20

8/12/19

P3021377.subfactors.out.txt

...and for P2976221.out.txt: Jamess-iMac:M+2 james$ time ../superfac/superfac13 -b 1 random seed =

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P3021377.subfactors.out.txt

...and for P2976221.out.txt: Jamess-iMac:M+2 james$ time ../superfac/superfac13 -b 1 random seed =

8/12/19

bearnol, einyen13

7/30/19

New Mersenne Prime

[Tue Jul 30 22:28:26 2019] 2^82589933+1/3 is not prime. RES64: 9841E7C75AC01D0C. We10: C404A363,

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New Mersenne Prime

[Tue Jul 30 22:28:26 2019] 2^82589933+1/3 is not prime. RES64: 9841E7C75AC01D0C. We10: C404A363,

7/30/19

6/17/19

30-digit factor of (M+2)42643801 by ECM by mprime287-OSX

[Mon Jun 17 11:45:51 2019] 2^42643801+1/3/405661842777846034141594389769 is not prime. RES64:

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30-digit factor of (M+2)42643801 by ECM by mprime287-OSX

[Mon Jun 17 11:45:51 2019] 2^42643801+1/3/405661842777846034141594389769 is not prime. RES64:

6/17/19

9/21/18

All current cofactors composite

Kindly double-checked by GP2 859433,,,1A2DFA00169CA483,TYPE-1,"1718867,268143097,22973354

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All current cofactors composite

Kindly double-checked by GP2 859433,,,1A2DFA00169CA483,TYPE-1,"1718867,268143097,22973354

9/21/18

9/21/18

New Mersenne Prime (and more fish!)

[Fri Sep 21 14:22:50 2018] 2^77232917+1/3/3460697185562027 is not prime. RES64: 83CC13DFD42B16B9. Wd9

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New Mersenne Prime (and more fish!)

[Fri Sep 21 14:22:50 2018] 2^77232917+1/3/3460697185562027 is not prime. RES64: 83CC13DFD42B16B9. Wd9

9/21/18

2/19/18

26-digit factor of (M+2)20996011 by ECM by mprime287-OSX

[Mon Feb 19 09:33:02 2018] 2^20996011+1/3/50965926368055564259063193 is not prime. RES64:

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26-digit factor of (M+2)20996011 by ECM by mprime287-OSX

[Mon Feb 19 09:33:02 2018] 2^20996011+1/3/50965926368055564259063193 is not prime. RES64:

2/19/18

11/25/17

Fwd: p41 factor of P110503 found by ECMNet!

? # timer = 1 (on) ? isprime((2^110503+1)/(3*48832113344350037579071829046935480686609)) time = 22min

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Fwd: p41 factor of P110503 found by ECMNet!

? # timer = 1 (on) ? isprime((2^110503+1)/(3*48832113344350037579071829046935480686609)) time = 22min

11/25/17

10/12/16

37-digit factor of (M+2)6972593 by ECM by mprime287-OSX

[Wed Oct 12 18:33:08 2016] 2^6972593+1/known_factors is not prime. RES64: 5D89531357882463. Wd9:

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37-digit factor of (M+2)6972593 by ECM by mprime287-OSX

[Wed Oct 12 18:33:08 2016] 2^6972593+1/known_factors is not prime. RES64: 5D89531357882463. Wd9:

10/12/16

10/10/16

New Mersenne Prime

[Mon Oct 10 18:42:25 2016] 2^74207281+1/3 is not prime. RES64: 699611E370B45F4A. Wd9: 01E2C8A8,

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New Mersenne Prime

[Mon Oct 10 18:42:25 2016] 2^74207281+1/3 is not prime. RES64: 699611E370B45F4A. Wd9: 01E2C8A8,

10/10/16

7/27/16

27-digit factor of (M+2)6972593 by ECM by mprime287-OSX

[Tue Jul 26 20:57:27 2016] ECM found a factor in curve #11, stage #2 Sigma=8282816111310800, B1=

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27-digit factor of (M+2)6972593 by ECM by mprime287-OSX

[Tue Jul 26 20:57:27 2016] ECM found a factor in curve #11, stage #2 Sigma=8282816111310800, B1=

7/27/16

7/22/16

FLT by Freshman's dream

FLT - the easy way - c JGW 2004-07-10 Inspired by http://www.bearnol.pwp.blueyonder.co.uk/Math/Cuboid

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FLT by Freshman's dream

FLT - the easy way - c JGW 2004-07-10 Inspired by http://www.bearnol.pwp.blueyonder.co.uk/Math/Cuboid

7/22/16

5/15/16

21-digit factor of (M+2)24036583 by ECM by mprime287-OSX

[Sun May 15 03:44:58 2016] 2^24036583+1/known_factors is not prime. RES64: 6E7F4102939E99AC. Wd9:

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21-digit factor of (M+2)24036583 by ECM by mprime287-OSX

[Sun May 15 03:44:58 2016] 2^24036583+1/known_factors is not prime. RES64: 6E7F4102939E99AC. Wd9:

5/15/16

9/22/13

New Mersenne Prime (and more fish!)

[Sun Sep 22 04:58:13 2013] 2^57885161+1/3/7061989643/100271784664656667 is not prime. RES64:

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New Mersenne Prime (and more fish!)

[Sun Sep 22 04:58:13 2013] 2^57885161+1/3/7061989643/100271784664656667 is not prime. RES64:

9/22/13

11/21/11

38-digit factor of (M+2)216091 by ECM by yoyo@home!

Congratulations! (and thanks!) to user shauge of yoyo@home, who today found the following 38-digit

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38-digit factor of (M+2)216091 by ECM by yoyo@home!

Congratulations! (and thanks!) to user shauge of yoyo@home, who today found the following 38-digit

11/21/11

10/14/11

Another data point for WEP... (14-digit factor)

P4253 T5313294 residue=10797702595979690624640873804907 base=245313293 factor=37876820097827

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Another data point for WEP... (14-digit factor)

P4253 T5313294 residue=10797702595979690624640873804907 base=245313293 factor=37876820097827

10/14/11

3/15/11

Re:23-digit factor of (M+2)32582657 by ECM by mprime255

... with thanks to ATH (on mersenneforum)! J On Mar 15, 10:54 am, bearnol <bear...@gmail.com>

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Re:23-digit factor of (M+2)32582657 by ECM by mprime255

... with thanks to ATH (on mersenneforum)! J On Mar 15, 10:54 am, bearnol <bear...@gmail.com>

3/15/11

3/15/11

Re: 45-digit factor of (M+2)23209 by ECM by yoyo@home!

Desmond:~ james$ gp GP/PARI CALCULATOR Version 2.3.5 (released) i386 running darwin (ix86 kernel) 32-

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Re: 45-digit factor of (M+2)23209 by ECM by yoyo@home!

Desmond:~ james$ gp GP/PARI CALCULATOR Version 2.3.5 (released) i386 running darwin (ix86 kernel) 32-

3/15/11

12/6/10

23-digit factor of (M+2)32582657 by ECM by mprime255

[Mon Dec 6 01:56:07 2010] ECM found a factor in curve #51, stage #2 Sigma=1483035008190041, B1=11000,

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23-digit factor of (M+2)32582657 by ECM by mprime255

[Mon Dec 6 01:56:07 2010] ECM found a factor in curve #51, stage #2 Sigma=1483035008190041, B1=11000,

12/6/10

12/6/10

45-digit factor of (M+2)23209 by ECM by yoyo@home!

Details of the lucky curve: Desmond:~ james$ /Applications/sage/sage ; exit; ------------------------

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45-digit factor of (M+2)23209 by ECM by yoyo@home!

Details of the lucky curve: Desmond:~ james$ /Applications/sage/sage ; exit; ------------------------

12/6/10

4/28/10

ERRATUM: repeated factors of (M+2)43112609

Two previously cited factors of (M+2)43112609 were in fact composite, and combinations of other,

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ERRATUM: repeated factors of (M+2)43112609

Two previously cited factors of (M+2)43112609 were in fact composite, and combinations of other,

4/28/10

4/6/10

Two new factors of (M+2)25964951 by P-1 by mprime255-OSX

[Tue Apr 6 23:07:19 2010] P-1 found a factor in stage #2, B1=250000, B2=25000000. 2^25964951+1 has a

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Two new factors of (M+2)25964951 by P-1 by mprime255-OSX

[Tue Apr 6 23:07:19 2010] P-1 found a factor in stage #2, B1=250000, B2=25000000. 2^25964951+1 has a

4/6/10

3/8/10

Another factor of (M+2)9941 by ECMNet

sage: p=53490436327391844747326672641668581779 sage: FindGroupOrder(p,883077734) 2^2 * 3^3 * 19 *

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Another factor of (M+2)9941 by ECMNet

sage: p=53490436327391844747326672641668581779 sage: FindGroupOrder(p,883077734) 2^2 * 3^3 * 19 *

3/8/10

3/8/10

Factor of (M+2)9941 by ECMNet

sage: p=2937581555281521885883181942758904369 sage: FindGroupOrder(p,1953495724) 2^3 * 3^2 * 31 * 53

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Factor of (M+2)9941 by ECMNet

sage: p=2937581555281521885883181942758904369 sage: FindGroupOrder(p,1953495724) 2^3 * 3^2 * 31 * 53

3/8/10

2/28/10

27-digit factor of (M+2)24036583 by P-1 by mprime255-OSX

[Sun Feb 28 15:34:13 2010] P-1 found a factor in stage #2, B1=50000, B2=5000000. 2^24036583+1 has a

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27-digit factor of (M+2)24036583 by P-1 by mprime255-OSX

[Sun Feb 28 15:34:13 2010] P-1 found a factor in stage #2, B1=50000, B2=5000000. 2^24036583+1 has a

2/28/10

1/24/10

deadline too short

Can the deadlines please be extended? I have my cache set to only .5 days, yet anytime BOINC

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deadline too short

Can the deadlines please be extended? I have my cache set to only .5 days, yet anytime BOINC

1/24/10

zombie67, bearnol3

6/3/09

Can't upload completed tasks

Yes, that's right - my ISP unexpectedly (hopefully!) changed my IP. http://toolbar.netcraft.com/

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Can't upload completed tasks

Yes, that's right - my ISP unexpectedly (hopefully!) changed my IP. http://toolbar.netcraft.com/

6/3/09

5/12/09

Speeding up WE/WEP by testing multiple bases at once?

...here is what it appears I have learnt about this latest adjustment to the algorithm: 1) it DOES

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Speeding up WE/WEP by testing multiple bases at once?

...here is what it appears I have learnt about this latest adjustment to the algorithm: 1) it DOES

5/12/09

3/9/09

Sincere thanks to yoyo, and his BOINCers over at yoyo@home: http://www.rechenkraft.net/yoyo/ who have

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Sincere thanks to yoyo, and his BOINCers over at yoyo@home: http://www.rechenkraft.net/yoyo/ who have

3/9/09

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