is 2 103080881 - 1
has 31030438 decimal digits
takes 410.427 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
Actual276148.465964.4737 %8550001795500010.31493.8354 %158.780865.8363 %
Target276148.465964.4737 %65000011000000038.14833.8547 %186.614265.8431 %
Difference---+205000-92045000-27.8334-0.0193 %-27.8334-0.0068 %

Known prime factors (1 factor, 91.0 bits, 0.00008832% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
10308088125433515618637223706174626732891.03912336679397723242056
23 × 3 × 11 × 13121 × 435947 × 8169467
2021-03-1143594781694678,061,9774.94945.1222

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-03-11Ben Deloi-0c5022127bee3d5c4855000179550001222891.03910.313.835%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-16Torchwood InstitutePH95002632640.019
2010-08-21Torchwood InstituteHTPC-V642642650.036
2012-05-08Richardsvn_022652660.072
2013-09-02willmoreManual testing2662670.145
2013-09-09willmoreManual testing2672680.290
2013-09-11SMoffatManual testing2682690.580
2014-05-07Alex HenrieManual testing2692701.160
2014-07-14tmorrowpaperclip2702712.320
2014-12-21munsun_jangintel-sub2712724.640
2019-11-30Ryan PropperManual testing2722739.279
2020-01-26Niels_Mache_NextcloudManual testing27227418.56
2020-11-281997rj7Manual testing274276111.4


ECM factoring results:
No ECM results for M103080881


Lucas-Lehmer results:
No L-L results for M103080881


PRP results:
No PRP results for M103080881


CERT results:
No CERT results for M103080881


P-1 factor-bounds graph:
B1 = 855000, B2 = 17955000 (P-1 stage 2)
B1 = 855000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00