is 2 56396699 - 1
has 16977099 decimal digits
takes 119.530 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB453499797FCD9EFdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27333.917764.3836 %1000000200000006.25454.9114 %40.172166.1328 %
Target27333.917764.3836 %4000006500000012.04574.0630 %45.963365.8307 %
Difference---+600000-45000000-5.7912+0.8484%-5.7912+0.3022 %

Known prime factors (1 factor, 77.8 bits, 0.00013791% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
563966992591605655669458221058012477.7782297657222517100
22 × 52 × 19 × 576749 × 2096741
2018-07-025767492096741667.252.02703.6073

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-02-05Jack The Ripper87.19.63.236775000775000--2.3821.991%
2018-07-02Sid & AndyPterodactyl100000020000000622477.7786.2544.911%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-15ANONYMOUSv4_computers212532.13000e-5
2000-03-08ANONYMOUSv4_computers212544.26000e-5
2000-06-11ANONYMOUSv4_computers212560.000
2001-09-22ANONYMOUSv4_computers212570.000
2002-09-29ANONYMOUSv4_computers212580.001
2016-02-23Mark RoseManual testing2582630.034
2008-07-23Sturle Sundefungo.ifi2632660.232
2008-07-25James HeinrichWHS2662670.265
2009-11-18GrunwalderGIMPcompute-0-72672680.530
2011-04-17ANONYMOUS2682691.060
2011-06-15XyzzyManual testing2692702.120
2012-01-26David CampeauManual testing2702714.240
2012-07-04Jerry HallettManual testing2712728.480
2016-01-22ANONYMOUSManual testing27227316.96


ECM factoring results:
No ECM results for M56396699


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2012-08-01Jack The Ripper87.19.63.236B453499797FCD9EF119.5


PRP results:
No PRP results for M56396699


CERT results:
No CERT results for M56396699


P-1 factor-bounds graph:
B1 = 1000000, B2 = 20000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 775000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
273
272
271
270
269
268
267
266
263
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
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280
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Last modified: 2024-03-13T02:15:48+00:00