is 2 52115383 - 1
has 15688294 decimal digits
takes 99.840 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
Actual27218.350363.8889 %----18.350363.8889 %
Target27336.704064.3836 %340000550000009.21693.8063 %45.920965.7392 %
Difference-1-18.3537-0.4947 %-340000-55000000-9.2169-3.8063 %-27.5706-1.8503 %

Known prime factors (1 factor, 90.4 bits, 0.00017350% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5211538316571562220017437117759649612890.42115898916275850296560
24 × 3 × 5 × 283 × 8297 × 8537 × 3304787
2012-03-23853733047879,247,7230.52260.9342

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-03-23Jerry HallettManual testing2890.4212.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-02-23ANONYMOUSv4_computers212544.60000e-5
2000-05-05ANONYMOUSv4_computers212560.000
2001-06-09ANONYMOUSv4_computers212570.000
2002-04-07ANONYMOUSv4_computers212580.001
2003-11-161997rj7v4_computers212590.001
2004-02-071997rj7v4_computers212600.001
2006-11-09ANONYMOUSv4_computers212630.019
2008-10-24DerekManual testing212640.036
2009-02-03Sturle Sundedittersdorf.ifi2642650.072
2009-02-04Sturle Sundegehry.ifi2652660.143
2009-04-20Dan MoodyAtom_dual2662670.287
2009-04-28Dan MoodyAtom_dual2672680.574
2010-03-25tojitablepc22682691.147
2011-12-08Kyle AskineManual testing2692702.294
2012-02-10Craig MeyersManual testing27027213.77


ECM factoring results:
No ECM results for M52115383


Lucas-Lehmer results:
No L-L results for M52115383


PRP results:
No PRP results for M52115383


CERT results:
No CERT results for M52115383


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
272
270
269
268
267
266
265
264
263
260
259
258
257
256
254
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00