is 2 104936141 - 1
has 31588927 decimal digits
takes 417.813 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
Actual277291.683764.9351 %10000003000000014.89523.9361 %306.578966.3152 %
Target276145.841064.4737 %65000012000000041.29373.9267 %187.134865.8687 %
Difference+1+145.8427+0.4614 %+350000-90000000-26.3986+0.0094%+119.4441+0.4466 %

Known prime factors (1 factor, 77.7 bits, 0.00007407% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1049361412501419449126292846820872477.7271191876995517823
907 × 358429 × 3666241
2020-07-133584293666241544.413.10984.2114

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-07-13Ernst W. MayerManual testing10000003000000022477.72714.984.320%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-24Richard2632640.019
2010-08-29CommasterCore-i72642650.036
2012-05-08sasaki3MATE_J12652660.071
2013-09-09willmoreManual testing2662670.142
2014-07-24Preben SManual testing2672680.285
2014-07-25Ryan PropperManual testing2682690.570
2015-02-02Earle LoweManual testing2692701.139
2015-02-09Earle LoweManual testing2702712.279
2018-01-03el groccoManual testing2712724.558
2019-12-04ViliamFManual testing27227427.35
2020-04-26TheJudgerManual testing274277255.2


ECM factoring results:
No ECM results for M104936141


Lucas-Lehmer results:
No L-L results for M104936141


PRP results:
No PRP results for M104936141


CERT results:
No CERT results for M104936141


P-1 factor-bounds graph:
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
277
274
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00