is 2 101650981 - 1
has 30599995 decimal digits
takes 404.733 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
Actual276150.554364.4737 %7380002163400010.83353.8998 %161.387865.8592 %
Target276150.554364.4737 %65000011000000038.14833.8481 %188.702665.8408 %
Difference---+88000-88366000-27.3148+0.0517%-27.3148+0.0184 %

Known prime factors (1 factor, 81.8 bits, 0.00008048% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
10165098142356752147051286920865272581.80920834404021664723
7 × 19 × 683 × 28097 × 8162981
2020-12-192809781629814,817.82.72104.7956

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-12-19MarkSdesktop-i773800021634000622581.80910.383.900%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-03-211997rj7Manual testing2632640.019
2010-08-14monstampere2642650.037
2012-04-18Richard2652660.074
2013-08-18america64Manual testing2662670.147
2013-10-26AdolfNorManual testing2672680.294
2014-03-28ANONYMOUSManual testing2682690.588
2014-04-02timc995dl580_g5b2692701.176
2014-04-07Andreas_TruetschManual testing2702712.352
2014-12-03shaugeManual testing2712724.705
2020-03-07Niels_Mache_NextcloudManual testing2722739.410
2020-03-07Niels_Mache_NextcloudManual testing27327418.82
2020-10-10TheJudgerManual testing27427537.64
2020-10-10TheJudgerManual testing27527675.28


ECM factoring results:
No ECM results for M101650981


Lucas-Lehmer results:
No L-L results for M101650981


PRP results:
No PRP results for M101650981


CERT results:
No CERT results for M101650981


P-1 factor-bounds graph:
B1 = 738000, B2 = 21634000 (P-1 stage 2)
B1 = 738000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
276
275
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: 2024-02-09T03:30:02+00:00