is 2 101121859 - 1
has 30440713 decimal digits
takes 385.668 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
Actual276151.342164.4737 %845000173225009.63763.7940 %160.979765.8216 %
Target276151.342164.4737 %65000011000000036.54143.8457 %187.883565.8399 %
Difference---+195000-92677500-26.9038-0.0516 %-26.9038-0.0183 %

Known prime factors (1 factor, 78.9 bits, 0.00007798% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1011218595466544669901881644222792478.8552702949057681921
32 × 4519 × 26927 × 2468113
2020-11-17269272468113702.470.88441.3889

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-11-17nranksnew-homen84500017322500622478.8559.643.794%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-03-191997rj7comp52632640.019
2010-08-12Mr-Plonklinux-i7-9202642650.037
2012-06-23Richardsvn_022652660.074
2013-08-26ANONYMOUSManual testing2662670.148
2013-08-26processinfoManual testing2662670.148
2013-09-23Oliver KruseManual testing2672729.163
2020-03-16el groccoGPU72_TF2722739.459
2020-04-03SRBaseManual testing27327418.92
2020-09-17Bill StaffenManual testing274276113.5


ECM factoring results:
No ECM results for M101121859


Lucas-Lehmer results:
No L-L results for M101121859


PRP results:
No PRP results for M101121859


CERT results:
No CERT results for M101121859


P-1 factor-bounds graph:
B1 = 845000, B2 = 17322500 (P-1 stage 2)
B1 = 845000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
276
274
273
272
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00