is 2 69616777 - 1
has 20956739 decimal digits
takes 186.128 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4E622D98C0D66D4Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual275109.914764.0000 %675000143437505.50383.7405 %115.418665.3466 %
Target27454.956163.5135 %4500008000000018.54673.9961 %73.502864.9716 %
Difference+1+54.9586+0.4865 %+225000-65656250-13.0429-0.2556 %+41.9158+0.3750 %

Known prime factors:
No known factors for M69616777

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-04-30kharlanMBP15Ret675000143437506--5.5044.119%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-10-22Jossv4_computers212543.45000e-5
2001-05-13Jossv4_computers212560.000
2003-09-29ANONYMOUSv4_computers212620.004
2016-03-29Mark RoseManual testing262264
2010-02-20Net_ForceKathy_PC2642650.054
2010-02-25Mads Johansen2652660.107
2010-02-26ANONYMOUSMB_Pro2662670.215
2010-02-27Jeff Palmerralph-laptop2672680.429
2010-02-28Sturle Sundeghini.ifi2682690.859
2013-09-15Architects CubedManual testing2692715.152
2014-04-18Bill StaffenManual testing27127320.61
2014-07-21Kevin JagetManual testing27327427.48
2016-06-16monstManual testing27427554.96


ECM factoring results:
No ECM results for M69616777


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2016-10-05SmegheadsW8-4770K4E622D98C0D66D4A186.1
2019-05-31AmeiseBitmonster4E622D98C0D66D4A186.1


PRP results:
No PRP results for M69616777


CERT results:
No CERT results for M69616777


P-1 factor-bounds graph:
B1 = 675000, B2 = 14343750 (P-1 stage 2)
B1 = 675000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
275
274
273
271
269
268
267
266
265
264
262
256
254
this exponent TF target: 74
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00