is 2 6944269 - 1
has 2090434 decimal digits
takes 1.514 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L827D781CFF22070Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual272137.715568.0556 %40000004568186709.06528.0808 %146.780770.6369 %
Target2674.278965.6716 %4500045000000.09102.2376 %4.369966.4398 %
Difference+5+133.4366+2.3839 %+3955000+452318670+8.9742+5.8433%+142.4108+4.1972 %

Known prime factors:
No known factors for M6944269

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-04-20Stephen Woodv4_computers3000030000--0.0090.537%
2011-09-05Carsten Kossendeymother4400001364000012--0.3675.757%
2021-11-12Seth_TrManual testing30000007500000012--2.1899.013%
2021-12-03Seth_TrManual testing4000000456818670--10.8611.734%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-07-21ANONYMOUSv4_computers212620.044
2005-03-20David Campeauv4_computers212630.141
2014-02-09NesowaManual testing2632640.283
2014-02-16lycornManual testing2642650.538
2015-06-26VictordeHollanderManual testing2652661.076
2016-04-05Gordon SpenceManual testing2662672.152
2018-02-24ANONYMOUSManual testing2672684.304
2020-04-24TJAOIManual testing2682698.609
2021-07-28takahashiManual testing26927017.22
2021-08-11SRBaseManual testing27027134.44
2021-09-25SRBaseManual testing27127268.87


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)
1999-07-12Ethan O'Connorv4_computers827D781CFF22070E1.514
2002-05-18Stephen Woodv4_computers827D781CFF22070E1.514


PRP results:
No PRP results for M6944269


CERT results:
No CERT results for M6944269


P-1 factor-bounds graph:
B1 = 4000000, B2 = 456818670 (P-1 stage 2)
B1 = 3000000, B2 = 75000000 (P-1 stage 2)
B1 = 4000000 (P-1 stage 1)
B1 = 3000000 (P-1 stage 1)
B1 = 440000, B2 = 13640000 (P-1 stage 2)
B1 = 440000 (P-1 stage 1)
B1 = 30000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
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
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00