is 2 56690617 - 1
has 17065577 decimal digits
takes 120.153 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
Actual2718.433163.3803 %----8.433163.3803 %
Target27333.741864.3836 %4000006500000012.04574.0657 %45.787565.8316 %
Difference-2-25.3087-1.0033 %-400000-65000000-12.0457-4.0657 %-37.3544-2.4513 %

Known prime factors (1 factor, 80.0 bits, 0.00014118% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5669061712408424924685507721898972580.03810943984720333444
22 × 133 × 641 × 1259 × 1543127
2011-12-06219715431274,472.70.26480.4826

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-12-06Stephan Grupp3e18md2580.0383.5970.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.12000e-5
2000-03-08ANONYMOUSv4_computers212544.23000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2001-09-30ANONYMOUSv4_computers212570.000
2002-10-26ANONYMOUSv4_computers212580.001
2004-01-27ThomRuleyv4_computers212610.003
2022-06-27LordJuliusManual testing261263
2008-08-03Sturle Sunderodolfo.ifi2632640.033
2008-08-04Sturle Sundebruckner.ifi2642650.066
2008-08-05Sturle Sundegluck.ifi2652660.132
2008-08-06Sturle Sundegluck.ifi2662670.264
2009-06-07GunnarLuGrinbergs2672680.527
2011-04-17GrunwalderGIMPcompute-0-12682691.055
2011-06-09Paul LeylandManual testing2692702.109
2011-10-11kevshawKERMIT2702714.218


ECM factoring results:
No ECM results for M56690617


Lucas-Lehmer results:
No L-L results for M56690617


PRP results:
No PRP results for M56690617


CERT results:
No CERT results for M56690617


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
271
270
269
268
267
266
265
264
263
261
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