P-1: Block of 33: First=20082767

dave_0273 · 2005-06-29, 07:02

These exponents have been LL-tested at least once, but without a matching double-check. They have not been P-1 tested yet.

Put this at the start of your worktodo.ini file:

Pfactor=20082767,66,1
Pfactor=20082809,66,1
Pfactor=20082991,66,1
Pfactor=20083003,66,1
Pfactor=20083277,66,1
Pfactor=20083717,66,1
Pfactor=20084447,66,1
Pfactor=20085697,66,1
Pfactor=20085763,66,1
Pfactor=20086159,66,1
Pfactor=20086471,66,1
Pfactor=20086519,66,1
Pfactor=20086831,66,1
Pfactor=20087143,66,1
Pfactor=20087231,66,1
Pfactor=20087357,66,1
Pfactor=20088617,66,1
Pfactor=20089507,66,1
Pfactor=20089697,66,1
Pfactor=20090527,66,1
Pfactor=20090561,66,1
Pfactor=20090599,66,1
Pfactor=20090849,66,1
Pfactor=20092057,66,1
Pfactor=20093081,66,1
Pfactor=20093347,66,1
Pfactor=20094101,66,1
Pfactor=20095021,66,1
Pfactor=20095759,66,1
Pfactor=20096899,66,1
Pfactor=20098319,66,1
Pfactor=20098693,66,1
Pfactor=20099477,66,1

Post here to claim this set.

When you're finished, manually check in your results at http://www.mersenne.org/ips/manualtests.html and post your results here as well.

ValerieVonck · 2005-06-29, 08:30

Ok I will take this set.
Thanx

ValerieVonck · 2005-07-20, 16:12

Block complete

Code:

[Mon Jul 04 17:35:48 2005]
Trying 1000 iterations for exponent 20082767 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Trying 1000 iterations for exponent 20082767 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24832, using 1280K FFT for exponent 20082767.
[Mon Jul 04 21:56:28 2005]
M20082767 completed P-1, B1=110000, B2=1732500, Wc1: 07A815FF
Trying 1000 iterations for exponent 20082809 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24701, using 1280K FFT for exponent 20082809.
[Tue Jul 05 21:40:09 2005]
M20082809 completed P-1, B1=110000, B2=1732500, Wc1: 07B31587
Trying 1000 iterations for exponent 20082991 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24619, using 1280K FFT for exponent 20082991.
[Wed Jul 06 10:04:07 2005]
M20082991 completed P-1, B1=110000, B2=1732500, Wc1: 07B61584
Trying 1000 iterations for exponent 20083003 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24757, using 1280K FFT for exponent 20083003.
[Wed Jul 06 14:12:48 2005]
M20083003 completed P-1, B1=110000, B2=1732500, Wc1: 07AB15FF
Trying 1000 iterations for exponent 20083277 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.2471, using 1280K FFT for exponent 20083277.
[Wed Jul 06 18:22:21 2005]
M20083277 completed P-1, B1=110000, B2=1732500, Wc1: 07AC1584
Trying 1000 iterations for exponent 20083717 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24698, using 1280K FFT for exponent 20083717.
[Wed Jul 06 22:34:40 2005]
M20083717 completed P-1, B1=110000, B2=1732500, Wc1: 07891586
Trying 1000 iterations for exponent 20084447 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.2473, using 1280K FFT for exponent 20084447.
[Thu Jul 07 21:51:26 2005]
M20084447 completed P-1, B1=110000, B2=1732500, Wc1: 07AF158C
Trying 1000 iterations for exponent 20085697 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24757, using 1280K FFT for exponent 20085697.
[Fri Jul 08 22:02:06 2005]
M20085697 completed P-1, B1=110000, B2=1732500, Wc1: 07B4159A
Trying 1000 iterations for exponent 20085763 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24883, using 1280K FFT for exponent 20085763.
[Sat Jul 09 13:17:39 2005]
M20085763 completed P-1, B1=110000, B2=1732500, Wc1: 07A01598
Trying 1000 iterations for exponent 20086159 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24765, using 1280K FFT for exponent 20086159.
[Sat Jul 09 17:25:53 2005]
M20086159 completed P-1, B1=110000, B2=1732500, Wc1: 07BF15A1
Trying 1000 iterations for exponent 20086471 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24786, using 1280K FFT for exponent 20086471.
[Sat Jul 09 21:06:59 2005]
M20086471 completed P-1, B1=110000, B2=1732500, Wc1: 07DF1599
Trying 1000 iterations for exponent 20086519 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24815, using 1280K FFT for exponent 20086519.
[Sun Jul 10 01:13:36 2005]
M20086519 completed P-1, B1=110000, B2=1732500, Wc1: 07D915A8
Trying 1000 iterations for exponent 20086831 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24868, using 1280K FFT for exponent 20086831.
[Sun Jul 10 14:36:14 2005]
M20086831 completed P-1, B1=110000, B2=1732500, Wc1: 07AA15A0
Trying 1000 iterations for exponent 20087143 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24786, using 1280K FFT for exponent 20087143.
[Sun Jul 10 18:47:33 2005]
P-1 found a factor in stage #2, B1=110000, B2=1732500.
M20087143 has a factor: 70427895743876585930567
Trying 1000 iterations for exponent 20087231 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24804, using 1280K FFT for exponent 20087231.
[Mon Jul 11 18:27:14 2005]
M20087231 completed P-1, B1=110000, B2=1732500, Wc1: 07CD15B5
Trying 1000 iterations for exponent 20087357 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.2479, using 1280K FFT for exponent 20087357.
[Tue Jul 12 18:14:41 2005]
M20087357 completed P-1, B1=110000, B2=1732500, Wc1: 07DE15AC
Trying 1000 iterations for exponent 20088617 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24939, using 1280K FFT for exponent 20088617.
[Wed Jul 13 17:59:17 2005]
M20088617 completed P-1, B1=110000, B2=1732500, Wc1: 07DE15B3
Trying 1000 iterations for exponent 20089507 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.24894, using 1280K FFT for exponent 20089507.
[Wed Jul 13 22:11:14 2005]
M20089507 completed P-1, B1=110000, B2=1732500, Wc1: 07D91442
Trying 1000 iterations for exponent 20089697 using 1024K FFT.
If average roundoff error is above 0.242, then a larger FFT will be used.
Final average roundoff error is 0.25006, using 1280K FFT for exponent 20089697.
[Thu Jul 14 09:44:31 2005]
M20089697 completed P-1, B1=110000, B2=1732500, Wc1: 07D4144E
[Thu Jul 14 18:44:23 2005]
M20090527 completed P-1, B1=110000, B2=1732500, Wc1: 07A11454
[Thu Jul 14 22:57:17 2005]
M20090561 completed P-1, B1=110000, B2=1732500, Wc1: 07FC1454
[Fri Jul 15 22:39:18 2005]
M20090599 completed P-1, B1=110000, B2=1732500, Wc1: 07CB1450
[Sat Jul 16 11:15:07 2005]
M20090849 completed P-1, B1=110000, B2=1732500, Wc1: 07FB1456
[Sat Jul 16 15:26:45 2005]
M20092057 completed P-1, B1=110000, B2=1842500, Wc1: 07FCC3EB
[Sat Jul 16 19:47:03 2005]
M20093081 completed P-1, B1=110000, B2=1842500, Wc1: 07C3C3D9
[Sun Jul 17 00:01:33 2005]
M20093347 completed P-1, B1=110000, B2=1842500, Wc1: 07CDC3DE
[Sun Jul 17 14:49:30 2005]
M20094101 completed P-1, B1=110000, B2=1842500, Wc1: 07CAC3C3
[Sun Jul 17 19:08:57 2005]
M20095021 completed P-1, B1=110000, B2=1842500, Wc1: 07E5C3C5
[Mon Jul 18 18:50:20 2005]
M20095759 completed P-1, B1=110000, B2=1842500, Wc1: 07F2C3CB
[Tue Jul 19 19:13:30 2005]
M20096899 completed P-1, B1=110000, B2=1842500, Wc1: 081EC3B8
[Wed Jul 20 09:32:41 2005]
M20098319 completed P-1, B1=110000, B2=1842500, Wc1: 080BC3A6
[Wed Jul 20 13:40:20 2005]
M20098693 completed P-1, B1=110000, B2=1842500, Wc1: 080BC3A1
[Wed Jul 20 17:49:24 2005]
M20099477 completed P-1, B1=110000, B2=1842500, Wc1: 0810C3AB

1 factor found

delta_t · 2005-07-20, 18:07

Are the error messages something to be concerned about? They are in the earlier ones, but not the latter ones. I don't think I've seen those before in other results submissions.

cheesehead · 2005-07-20, 19:32

Those messages are normal ever since version 22 iintroduced "soft FFT crossovers".

Code:

New features in Version 22.8 of prime95.exe
-------------------------------------------
1) Soft FFT crossovers have been implemented. If you test an exponent that
	is within 0.2% of the old hard FFT crossover point, then 1000 test
	iterations are run to determine if the smaller or larger FFT is
	appropriate for the exponent.

So, for certain small ranges of exponents near the FFT crossover points (only 0.4% -- 0.2% on each side), Prime95 runs a test to determine whether the smaller (faster) FFT size yields an acceptable average roundoff error. If not, Prime 95 will use the larger (slower, but more accurate) FFT size. What you saw were the messages from that procedure. The ranges in which Prime95 does this include only 1/250 of all exponents, which is why you usually don't encounter this.

2005-06-29, 07:02	#1
dave_0273 Oct 2003 Australia, Brisbane 1D6₁₆ Posts	P-1: Block of 33: First=20082767 These exponents have been LL-tested at least once, but without a matching double-check. They have not been P-1 tested yet. Put this at the start of your worktodo.ini file: Pfactor=20082767,66,1 Pfactor=20082809,66,1 Pfactor=20082991,66,1 Pfactor=20083003,66,1 Pfactor=20083277,66,1 Pfactor=20083717,66,1 Pfactor=20084447,66,1 Pfactor=20085697,66,1 Pfactor=20085763,66,1 Pfactor=20086159,66,1 Pfactor=20086471,66,1 Pfactor=20086519,66,1 Pfactor=20086831,66,1 Pfactor=20087143,66,1 Pfactor=20087231,66,1 Pfactor=20087357,66,1 Pfactor=20088617,66,1 Pfactor=20089507,66,1 Pfactor=20089697,66,1 Pfactor=20090527,66,1 Pfactor=20090561,66,1 Pfactor=20090599,66,1 Pfactor=20090849,66,1 Pfactor=20092057,66,1 Pfactor=20093081,66,1 Pfactor=20093347,66,1 Pfactor=20094101,66,1 Pfactor=20095021,66,1 Pfactor=20095759,66,1 Pfactor=20096899,66,1 Pfactor=20098319,66,1 Pfactor=20098693,66,1 Pfactor=20099477,66,1 Post here to claim this set. When you're finished, manually check in your results at http://www.mersenne.org/ips/manualtests.html and post your results here as well.

2005-07-20, 18:07	#4
delta_t Nov 2002 Anchorage, AK 101100101₂ Posts	Are the error messages something to be concerned about? They are in the earlier ones, but not the latter ones. I don't think I've seen those before in other results submissions. Last fiddled with by delta_t on 2005-07-20 at 18:09

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2005-06-29, 08:30	#2
ValerieVonck Mar 2004 Belgium 7·11² Posts	Ok I will take this set. Thanx

2005-07-20, 19:32	#5
cheesehead "Richard B. Woods" Aug 2002 Wisconsin USA 2²·3·641 Posts	Those messages are normal ever since version 22 iintroduced "soft FFT crossovers". Code: New features in Version 22.8 of prime95.exe ------------------------------------------- 1) Soft FFT crossovers have been implemented. If you test an exponent that is within 0.2% of the old hard FFT crossover point, then 1000 test iterations are run to determine if the smaller or larger FFT is appropriate for the exponent. So, for certain small ranges of exponents near the FFT crossover points (only 0.4% -- 0.2% on each side), Prime95 runs a test to determine whether the smaller (faster) FFT size yields an acceptable average roundoff error. If not, Prime 95 will use the larger (slower, but more accurate) FFT size. What you saw were the messages from that procedure. The ranges in which Prime95 does this include only 1/250 of all exponents, which is why you usually don't encounter this.