is 2 52270457 - 1
has 15734976 decimal digits
takes 100.137 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
Actual27218.295963.8889 %----18.295963.8889 %
Target27336.595164.3836 %360000550000009.26943.8389 %45.864665.7509 %
Difference-1-18.2993-0.4947 %-360000-55000000-9.2694-3.8389 %-27.5687-1.8620 %

Known prime factors (1 factor, 82.6 bits, 0.00015810% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5227045775458212242177406320199212582.64272180555301226280
23 × 3 × 5 × 163 × 347 × 16871 × 630349
2012-01-311687163034923,3620.13970.1782

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-01-31delta_tvader2582.6422.9030.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-01ANONYMOUSv4_computers212532.30000e-5
2000-02-23ANONYMOUSv4_computers212544.59000e-5
2000-05-05ANONYMOUSv4_computers212560.000
2001-06-17ANONYMOUSv4_computers212570.000
2002-04-20ANONYMOUSv4_computers212580.001
2003-11-171997rj7v4_computers212590.001
2004-02-141997rj7v4_computers212600.001
2007-03-20ANONYMOUSv4_computers212630.019
2008-11-03DerekManual testing212640.036
2008-12-07Sturle Sundedelhi.ifi2642650.071
2008-12-09MVd16002652660.143
2008-12-10Sturle Sundehoffman.ifi2662670.286
2009-04-19Sturle Sundegorro.ifi2672680.572
2010-04-30FCG Primesjohn-stack2682691.144
2011-12-23JaxonManual testing26927216.01


ECM factoring results:
No ECM results for M52270457


Lucas-Lehmer results:
No L-L results for M52270457


PRP results:
No PRP results for M52270457


CERT results:
No CERT results for M52270457


P-1 factor-bounds graph:
103
104
105
103
104
105
106
TF factor-bounds graph:
272
269
268
267
266
265
264
263
260
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00