is 2 2596897 - 1
has 781744 decimal digits
takes 0.180 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L6FBED1CD3ABF184Fdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27092.013968.5714 %5000000864646965047.854012.2310 %139.867972.4155 %
Target2630.614665.0794 %1200010000000.00661.5300 %0.621265.6136 %
Difference+7+91.3993+3.4921 %+4988000+8645469650+47.8474+10.7011%+139.2467+6.8018 %

Known prime factors:
No known factors for M2596897

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-10-31ANONYMOUSv4_computers2048204800--0.0010.668%
2003-11-08Team Prime Ribv4_computers15000217500--0.0031.677%
2010-11-16JossManual testing2000020000--0.0020.627%
2011-01-15JossManual testing5000050000--0.0051.137%
2011-04-18James HeinrichWHS17500041562506--0.0395.429%
2016-08-25mikrMSI320000011200000012--0.91811.870%
2023-01-23Architects Cubedgpu7250000008646469650--58.7219.102%


Trial Factoring results:
5758596061626364656667686970
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-26ANONYMOUSv4_computers212590.015
2016-02-23Mark RoseManual testing2592600.030
2009-01-29Sturle Sundenouchcraft.ifi2602610.059
2012-06-23Sebastian HornbostelManual testing2612620.118
2013-01-14dbaughManual testing2622630.378
2015-02-27VictordeHollanderManual testing2632652.195
2015-11-08ramgeisManual testing2652662.878
2017-08-21Gordon SpenceManual testing2662675.755
2019-03-25TJAOIManual testing26726811.51
2021-05-27TJAOIManual testing26826923.02
2024-03-15TJAOIManual testing26927046.04


ECM factoring results:
Total ECM effort:15.890 GHz-days
Estimated T-Level:23.068
DigitsB1CompleteFacMiss
20110006.6350.131%
25500000.61454.138%
302500000.03996.200%
3510000000.00299.819%


ECM Summary

B1B2factorcurvesGHz-days
50000500000014613.34
50000515000070.655
50000661310640.421
50000661434970.736
50000665000070.738


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-02-12ANONYMOUSv4_computers6FBED1CD3ABF184F0.180
1999-08-07LEE Sau Danv4_computers6FBED1CD3ABF184F0.180
1999-11-24ANONYMOUSv4_computers6FBED1CD3ABF184F0.180
1999-12-01ANONYMOUSv4_computers6FBED1CD3ABF184F0.180
1999-12-08ANONYMOUSv4_computers6FBED1CD3ABF184F0.180
1999-12-23ANONYMOUSv4_computers6FBED1CD3ABF184F0.180
2000-01-25ANONYMOUSv4_computers6FBED1CD3ABF184F0.180


PRP results:
No PRP results for M2596897


CERT results:
No CERT results for M2596897


P-1 factor-bounds graph:
B1 = 5000000, B2 = 8646469650 (P-1 stage 2)
B1 = 3200000, B2 = 112000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 3200000 (P-1 stage 1)
B1 = 175000, B2 = 4156250 (P-1 stage 2)
B1 = 175000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
B1 = 15000, B2 = 217500 (P-1 stage 2)
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)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
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269
268
267
266
265
263
262
261
260
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=23.07 ~= 60-bit
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Last modified: 2024-03-15T09:48:34+00:00