is 2 65944727 - 1
has 19851341 decimal digits
takes 166.694 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27458.016264.8649 %----58.016264.8649 %
Target27458.016264.8649 %4500007500000016.53663.9206 %74.552866.2424 %
Difference----450000-75000000-16.5366-3.9206 %-16.5366-1.3775 %

Known prime factors (1 factor, 87.5 bits, 0.00013274% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
659447272239952011617759256790147272787.5341698355663537555669
37 × 53 × 8867 × 238531 × 409477
2014-03-14238531409477906,2420.90841.7793

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-03-14Bdoterle2787.5342.0930.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-11-28Gordon Spencev4_computers212590.001
2004-03-161997rj7v4_computers212600.001
2022-03-30LordJuliusManual testing260263
2009-01-23Wojciech FlorekManual testing2632640.030
2010-01-06Sturle Sundeghirardelli.ifi2642650.057
2010-01-07ANONYMOUSC14EAAD492652660.113
2010-01-08DanielH2662670.227
2010-01-14DanielH2672680.453
2010-01-15bzmsimon2682690.907
2012-01-31GIMP Philippinesbuyer052692701.813
2012-06-25kirklepageManual testing2702713.626
2014-02-27Craig MeyersManual testing27127450.77


ECM factoring results:
No ECM results for M65944727


Lucas-Lehmer results:
No L-L results for M65944727


PRP results:
No PRP results for M65944727


CERT results:
No CERT results for M65944727


P-1 factor-bounds graph:
104
105
106
104
105
106
TF factor-bounds graph:
274
271
270
269
268
267
266
265
264
263
260
259
this exponent TF target: 74
TF double-checked to: 67
250
260
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Last modified: 2024-03-13T02:15:48+00:00