is 2 6962701 - 1
has 2095982 decimal digits
takes 1.518 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L15BA4BE543634958double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual272137.351068.0556 %40000004568186709.06528.0829 %146.416170.6376 %
Target2674.267665.6716 %4500045000000.09102.2386 %4.358666.4401 %
Difference+5+133.0834+2.3839 %+3955000+452318670+8.9742+5.8443%+142.0576+4.1975 %

Known prime factors:
No known factors for M6962701

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-09-10ANONYMOUSv4_computers3000030000--0.0090.537%
2011-09-06Carsten Kossendeymother4400001353000012--0.3655.750%
2021-11-07Seth_TrManual testing20000005800000012--1.5978.435%
2021-12-06Seth_TrManual testing4000000456818670--10.8611.737%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-07-21ANONYMOUSv4_computers212620.044
2004-03-26Sturle Sundev4_computers212630.141
2014-02-09NesowaManual testing2632640.282
2014-02-15lycornManual testing2642650.537
2015-06-26VictordeHollanderManual testing2652661.073
2016-04-24Gordon SpenceManual testing2662672.147
2018-02-26ANONYMOUSManual testing2672684.293
2020-04-24TJAOIManual testing2682698.586
2021-08-04takahashiManual testing26927017.17
2021-09-06SRBaseManual testing27027134.34
2021-09-25SRBaseManual testing27127268.69


ECM factoring results:
Total ECM effort:1.989 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15ANONYMOUSv4_computers97277967A67475A71.518
1999-06-26ANONYMOUSv4_computers15BA4BE5436349581.518
2001-10-13ANONYMOUSv4_computers15BA4BE5436349581.518


PRP results:
No PRP results for M6962701


CERT results:
No CERT results for M6962701


P-1 factor-bounds graph:
B1 = 4000000, B2 = 456818670 (P-1 stage 2)
B1 = 2000000, B2 = 58000000 (P-1 stage 2)
B1 = 4000000 (P-1 stage 1)
B1 = 2000000 (P-1 stage 1)
B1 = 440000, B2 = 13530000 (P-1 stage 2)
B1 = 440000 (P-1 stage 1)
B1 = 30000 (P-1 stage 1)
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109
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
262
this exponent TF target: 67
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
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Last modified: 2024-03-13T02:15:48+00:00