is 2 2095399 - 1
has 630778 decimal digits
takes 0.138 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L841BA0F991324A14double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26714.180668.6567 %25000001250000000.87468.5641 %15.055271.3410 %
Target2620.293266.1290 %90007000000.00441.4010 %0.297666.6036 %
Difference+5+13.8874+2.5277 %+2491000+124300000+0.8702+7.1630%+14.7576+4.7374 %

Known prime factors (1 factor, 85.6 bits, 0.00408331% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2095399570942718192103568704510572685.56213623723171388923272
23 × 31 × 11057 × 547831 × 9069017
2017-05-2654783190690176,533,5950.09650.1063

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-02-27ANONYMOUSv4_computers204820480012--0.0010.770%
2009-07-27USAFSSP4_260020000260000--0.0032.112%
2010-12-28JossManual testing3000030000--0.0030.928%
2011-01-09JossManual testing5000050000--0.0051.264%
2011-01-22James HeinrichQ660014000031500006--0.0295.391%
2016-07-28JossManual testing186340630000012--0.0506.382%
2016-11-05JossManual testing223608223608---2.628%
2016-11-09JossManual testing268329268329---2.832%
2017-05-26mikrMSI25000001250000001222685.5620.87512.557%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-01-17ANONYMOUSv4_computers212580.018
2016-02-23Mark RoseManual testing2582600.055
2009-01-03Sturle Sundenardi.ifi2602610.073
2012-03-24Sebastian HornbostelManual testing2612620.147
2013-09-04ramgeisManual testing2622630.468
2015-04-10VictordeHollanderManual testing2632652.720
2015-10-31ramgeisManual testing2652663.566
2016-09-21Gordon SpenceManual testing2662677.133


ECM factoring results:
Total ECM effort:9.395 GHz-days
Estimated T-Level:21.916
DigitsB1CompleteFacMiss
20110004.1281.611%
25500000.38368.165%
302500000.02497.599%
3510000000.00199.886%


ECM Summary

B1B2factorcurvesGHz-days
50000465000080.661
500005000000302.417
50000669425570.678
500007000000575.640


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-02-07ANONYMOUSv4_computers841BA0F991324A140.138


PRP results:
dateuseridcompidcofactorsres64
2017-10-06Oliver KruseGTX-0
57094271819210356870451057
B5D9DCA194A99F22
2017-11-17kkmrkkblmbrbkc4.xlarge
57094271819210356870451057
B5D9DCA194A99F22


CERT results:
No CERT results for M2095399


P-1 factor-bounds graph:
B1 = 2500000, B2 = 125000000 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 186340, B2 = 6300000 (P-1 stage 2)
B1 = 140000, B2 = 3150000 (P-1 stage 2)
B1 = 268329 (P-1 stage 1)
B1 = 223608 (P-1 stage 1)
B1 = 186340 (P-1 stage 1)
B1 = 140000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
B1 = 20000, B2 = 260000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
B1 = 20000 (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
TF factor-bounds graph:
267
266
265
263
262
261
260
258
this exponent TF target: 62
TF double-checked to: 67
ECM T-Level=21.92 ~= 56-bit
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Last modified: 2024-03-13T02:15:48+00:00