is 2 103855369 - 1
has 31263582 decimal digits
takes 413.510 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
Actual276147.358764.4737 %100000011497735.82041.8278 %153.179165.1230 %
Target276147.358764.4737 %65000011000000038.14833.8582 %185.507065.8444 %
Difference---+350000-108850227-32.3279-2.0304 %-32.3279-0.7213 %

Known prime factors (1 factor, 78.9 bits, 0.00007601% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1038553695819967703922603553767212478.9452801958030654440
23 × 5 × 7 × 29 × 300119 × 1149773
2021-05-163001191149773928.821.99993.5263

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-05-16Mihai PredaManual testing1000000114977322478.9455.8551.828%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-12-30Architects Cubedv4_computers2572610.003
2010-04-17sasaki3MATE_J2632640.019
2010-08-29Richardsvn_022642650.036
2012-05-02Torchwood InstituteOpt6128x4x42652660.072
2022-03-31LordJuliusManual testing21267
2013-09-02RobishManual testing2662670.144
2013-09-05RobishManual testing2672680.288
2013-09-10RobishManual testing2682690.576
2013-09-17RobishManual testing2692701.151
2014-10-23workerthreadManual testing2702712.303
2014-12-30SMoffatManual testing2712724.605
2019-08-27Niels_Mache_NextcloudManual testing27227427.63
2021-01-25ixfd64Manual testing27427536.84
2021-01-31tServoManual testing27527673.68


ECM factoring results:
No ECM results for M103855369


Lucas-Lehmer results:
No L-L results for M103855369


PRP results:
No PRP results for M103855369


CERT results:
No CERT results for M103855369


P-1 factor-bounds graph:
B1 = 1000000, B2 = 1149773 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
276
275
274
272
271
270
269
268
267
266
265
264
261
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00