is 2 1173481 - 1
has 353253 decimal digits
takes 0.036 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LED5191279CFEB81Fdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26725.321268.6567 %1836752183675200.12175.6621 %25.442970.4314 %
Target2600.130965.0000 %50001400000.00050.7987 %0.131465.2795 %
Difference+7+25.1903+3.6567 %+1831752+18227520+0.1212+4.8634%+25.3115+5.1519 %

Known prime factors (1 factor, 94.3 bits, 0.00803301% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1173481238144254014555617416025449532994.26610146915630272480654396
22 × 17 × 5081 × 10253 × 2864342746579
2016-01-271025328643427465793.419e+96,939.312,961

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-05-05Jossv4_computers10001000--4.45000e-50.039%
2002-06-09ANONYMOUSv4_computers500001000000--0.0054.190%
2012-02-08markrtiny5000001000000012--0.0478.625%
2016-01-01JossManual testing18367521836752012--0.12610.298%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-04ANONYMOUSv4_computers212570.016
2003-05-11ANONYMOUSv4_computers212580.033
2016-02-23Mark RoseManual testing2582600.098
2009-02-15Sturle Sundekinner.ifi2602610.131
2012-09-04AxelssonManual testing2612620.262
2012-10-18dbaughManual testing2622630.837
2014-12-31Matthias WurtingerManual testing2632641.673
2015-01-01lycornManual testing2642653.184
2015-09-29omylistManual testing2652666.368


ECM factoring results:
Total ECM effort:18.872 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000028010.48
50000500000010.037
25000025000000448.357


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-07-20ANONYMOUSv4_computersED5191279CFEB81F0.036


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-2
23814425401455561741602544953
648F3539FA0D8954
2017-10-17Oliver KruseThreadripper-PC
23814425401455561741602544953
648F3539FA0D8954
2018-01-06ATHec2-1xh
23814425401455561741602544953
648F3539FA0D8954


CERT results:
No CERT results for M1173481


P-1 factor-bounds graph:
B1 = 1836752, B2 = 18367520 (P-1 stage 2)
B1 = 1836752 (P-1 stage 1)
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
266
265
264
263
262
261
260
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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2100
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Last modified: 2024-02-09T03:30:02+00:00