is 2 2296247 - 1
has 691240 decimal digits
takes 0.155 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LF70D7A1D66686490double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26951.992168.1159%3000000900000000.75827.0755%52.750370.3719%2.2560%
PrimeNet2580.016762.0690%100001900000.00192.9271%0.018763.1793%1.1103%
GPU722620.267564.5161%120002000000.00221.7370%0.269765.1325%0.6163%
Difference+7+51.7246+3.5998%+2988000+89800000+0.7560+5.3386%+52.4806+5.2394%+5.2394%

Known prime factors:
No known factors for M2296247

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-08-08T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.185%
2010-11-07T12:40:00Jocelyn LaroucheManual testing1500015000---0.001--0.167%
2010-11-15T02:50:00Jocelyn LaroucheManual testing2000020000---0.002--0.216%
2010-12-03T15:21:00Oscar Östlin7501175011---0.007--0.585%
2011-01-17T15:33:00Oscar Östlin850001742500---0.017--1.977%
2014-06-11T02:10:00Jocelyn LaroucheManual testing112952112952---0.011--0.755%
2014-10-03T21:04:00Jocelyn LaroucheManual testing140904140904---0.014--0.859%
2016-01-25T11:47:50Jocelyn LaroucheManual testing43133743133706---0.063--3.226%
2019-11-22T17:26:04BigBrotherWinston30000009000000012---0.758--7.076%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:29:11Mark RoseManual testing21260--0.067--
2009-01-16T19:30:00Sturle Sundehummel.ifi260261--0.067--
2012-05-12T06:48:00Sebastian HornbostelManual testing261262--0.134--
2013-01-23T08:24:00dbaughManual testing262263--0.428--
2015-03-12T10:50:00VictordeHollanderManual testing263264--0.855--
2015-03-12T10:50:00VictordeHollanderManual testing264265--1.627--
2015-11-04T09:56:27ramgeisManual testing265266--3.254--
2017-05-27T13:18:46Gordon SpenceManual testing266267--6.509--
2019-04-08T13:40:37TJAOIManual testing267268--13.02--
2021-06-10T09:22:54TJAOIManual testing268269--26.03--


ECM factoring results:

Old Calculation Method

Total ECM effort:16.458 GHz-days
Estimated T-Level:23.268
DigitsB1CurvesCompleteFacMiss
2011000183 / 1001.83015.894%
2550000183 / 2800.65451.958%

New Calculation Method

Total ECM effort:16.458 GHz-days
Estimated T-Level:23.268
DigitsB1CompleteFacMiss
20110007.1040.082%
25500000.65951.755%
302500000.04295.915%
3510000000.00299.804%


ECM Summary

B1B2factorcurvesGHz-days
50000500000016814.86
500006750000141.418
1000001000000010.177


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15T00:00:00Stephen Woodv4_computersF70D7A1D666864900.155
2018-04-29T22:20:41kkmrkkblmbrbkoldF70D7A1D666864900.155


PRP results:
No PRP results for M2296247


P-1 factor-bounds graph:
B1 = 3000000, B2 = 90000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 431337, B2 = 4313370 (P-1 stage 2)
B1 = 431337 (P-1 stage 1)
B1 = 85000, B2 = 1742500 (P-1 stage 2)
B1 = 140904 (P-1 stage 1)
B1 = 112952 (P-1 stage 1)
B1 = 85000 (P-1 stage 1)
B1 = 75011 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-05-03T07:29:22+00:00