is 2 4399973 - 1
has 1324524 decimal digits
takes 0.549 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L69F846257B02FC77double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual273434.740068.4932 %620000029438922240291.123511.9016 %725.863572.2430 %
Target2651.658164.6154 %2600025000000.02912.0318 %1.687265.3343 %
Difference+8+433.0819+3.8778 %+6174000+29436422240+291.0944+9.8698%+724.1763+6.9086 %

Known prime factors (1 factor, 91.8 bits, 0.00208670% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
439997343533663814640463755119211692891.814494703760848537749608
23 × 11 × 37 × 127 × 600601 × 1991916109
2022-12-276006011991916109148,710,28419.72936.657

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-31Carsten Kossendeymother25000356250--0.0081.835%
2012-01-14Squeeky_SquirrelT7500_220011000022550006--0.0413.884%
2018-12-19Ismo Laitela6600K22377396265668112--1.0009.654%
2022-12-27DRobinsonPE5600X62000002943892224022891.814357.319.579%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-03-31ANONYMOUSv4_computers212600.017
1998-06-14netconxv4_computers212610.035
2010-11-02markrut2612620.070
2012-02-29GrunwalderGIMPManual testing212630.363
2016-02-23Mark RoseManual testing2622630.223
2014-07-03JayderHPJared2632640.446
2014-07-03lycornManual testing2642650.849
2015-06-20snme2pm1Manual testing2652661.698
2018-05-07chuenkitManual testing2662673.397
2018-10-30chuenkitManual testing2672686.793
2021-01-25ANONYMOUSManual testing26827040.76
2021-01-31ANONYMOUSManual testing270272163.0
2021-02-11ANONYMOUSManual testing272273217.4


ECM factoring results:
Total ECM effort:2.071 GHz-days
Estimated T-Level:2.308
DigitsB1CompleteFacMiss
20110000.46263.031%
25500000.04395.819%
302500000.00399.731%


ECM Summary

B1B2factorcurvesGHz-days
500005000000122.071


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-07-11netconxv4_computers69F846257B02FC770.549
2000-03-01ANONYMOUSv4_computers69F846257B02FC770.549
2000-06-11ANONYMOUSv4_computers69F846257B02FC770.549
2000-07-25ANONYMOUSv4_computers69F846257B02FC770.549


PRP results:
dateuseridcompidcofactorsres64
2023-01-01rucio
4353366381464046375511921169
E6A1A2F6AE287D0E


CERT results:
dateuseridcompid
2023-01-01curtiscwcm202--40l


P-1 factor-bounds graph:
B1 = 6200000, B2 = 29438922240 (P-1 stage 2)
B1 = 6200000 (P-1 stage 1)
B1 = 2237739, B2 = 62656681 (P-1 stage 2)
B1 = 2237739 (P-1 stage 1)
B1 = 110000, B2 = 2255000 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
B1 = 25000, B2 = 356250 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
273
272
270
268
267
266
265
264
263
262
261
260
this exponent TF target: 65
TF double-checked to: 67
ECM T-Level=2.31 ~= -9-bit
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00