is 2 943763 - 1
has 284101 decimal digits
takes 0.023 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LE1520797EB5A55BDdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26731.484570.1493 %985000315200000.09315.7898 %31.577671.8776 %
Target2440.000054.5455 %1500032500000.006718.2829 %0.006762.8558 %
Difference+23+31.4845+15.6038 %+970000+28270000+0.0864-12.4930 %+31.5709+9.0217 %

Known prime factors (2 factors, 176.4 bits, 0.01869183% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
94376355469463836537538671272272.2322938739060364601
13 × 226056850797277
2014-05-26132260568507972771,013.3433,068808,851
9437632288808332636209318347437058043332104.17412125969828422015476064632
23 × 3 × 1074023 × 470426371549694291
2019-12-0910740234704263715496942911.360e+11901,219,3211.683e+9

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-01-08ANONYMOUSv4_computers2000200000--0.00012.231%
2002-02-24ANONYMOUSv4_computers4096409600--0.00115.157%
2002-04-28ANONYMOUSv4_computers8192819200--0.00217.957%
2002-05-25ANONYMOUSv4_computers163841638400--0.00420.719%
2002-07-27ANONYMOUSv4_computers32768327680012--0.00723.437%
2003-01-09ANONYMOUSv4_computers65536655360012--0.01526.102%
2003-09-14ANONYMOUSv4_computers1310721310720012--0.02928.708%
2011-06-08JossManual testing200000200000--0.00715.615%
2011-07-14JossManual testing214869214869--0.00815.838%
2011-10-13JossManual testing716230716230--0.02519.588%
2012-06-26JossManual testing943769943769--0.03320.443%
2013-10-21David Campeaui5-2500k9850003152000012--0.09332.539%
2016-03-17alpertronManual testing20000050000006---26.288%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-06-29ANONYMOUSv4_computers212550.005
2000-07-03ANONYMOUSv4_computers212550.005
2000-11-25ANONYMOUSv4_computers212560.010
2001-10-20ANONYMOUSv4_computers212570.020
2003-08-25ANONYMOUSv4_computers212580.041
2022-03-07LordJuliusManual testing258260
2010-05-14Architects Cubedi4l_12602610.163


ECM factoring results:
Total ECM effort:14.035 GHz-days
Estimated T-Level:25.651
DigitsB1CompleteFacMiss
201100014.5770.000%
25500001.59820.223%
302500000.13087.796%
3510000000.00999.136%


ECM Summary

B1B2factorcurvesGHz-days
10.169
5000050000002757.652
25000025000000344.801
25000025000000101.412


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-12-08ANONYMOUSv4_computersE1520797EB5A55BD0.023


PRP results:
dateuseridcompidcofactorsres64
2017-09-28Oliver KruseGTX-2
5546946383653753867127
CBC3B53A4411B573
2017-10-15Oliver KruseThreadripper-PC
5546946383653753867127
CBC3B53A4411B573
2017-12-22ATHec2-1xh
5546946383653753867127
CBC3B53A4411B573
2019-12-10Chang Chia-Tchehomura
5546946383653753867127
22888083326362093183474370580433
D4FD56EF8CA2E480
2019-12-11GANAC-GR
5546946383653753867127
22888083326362093183474370580433
D4FD56EF8CA2E480


CERT results:
No CERT results for M943763


P-1 factor-bounds graph:
B1 = 985000, B2 = 31520000 (P-1 stage 2)
B1 = 985000 (P-1 stage 1)
B1 = 943769 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 716230 (P-1 stage 1)
B1 = 200000, B2 = 5000000 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 214869 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 65536 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 32768 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 8192 (P-1 stage 1)
B1 = 4096 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=25.65 ~= 69-bit
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Last modified: 2024-03-03T02:29:32+00:00