is 2 103076681 - 1
has 31029173 decimal digits
takes 410.410 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
Actual276148.471964.4737 %7580007580004.37621.5331 %152.848165.0184 %
Target276148.471964.4737 %65000011000000038.14833.8547 %186.620265.8431 %
Difference---+108000-109242000-33.7721-2.3215 %-33.7721-0.8247 %

Known prime factors (2 factors, 185.4 bits, 0.00017985% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1030766811829326641405731038805772477.276887362021971648
26 × 34 × 71 × 14149 × 170393
2021-03-1414149170393435.010.13080.1662
10307668135056695125766052741379014570354333108.1111700515324400387549409891
32 × 127 × 421 × 8867 × 31081 × 31873 × 402307
2021-03-14318734023071.681e+90.30050.3745

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-03-14ixfd64chiousheng-pc2758000758000156185.3874.5081.533%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-19Grant McCrackenhome2632640.019
2010-08-21Torchwood InstitutePH95002642650.036
2012-04-27mmVIR0042652660.072
2013-09-02willmoreManual testing2662670.145
2013-09-09willmoreManual testing2672680.290
2013-09-11SMoffatManual testing2682690.580
2014-05-07Alex HenrieManual testing2692701.160
2014-05-11SMoffatManual testing2702712.320
2015-03-13RMAC9.5v4_computers212724.640
2020-01-26Niels_Mache_NextcloudManual testing27227427.84
2020-11-30TheJudgerManual testing274276111.4


ECM factoring results:
No ECM results for M103076681


Lucas-Lehmer results:
No L-L results for M103076681


PRP results:
No PRP results for M103076681


CERT results:
No CERT results for M103076681


P-1 factor-bounds graph:
B1 = 758000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
276
274
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
2100
2110
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Last modified: 2024-03-13T02:15:48+00:00