is 2 2407277 - 1
has 724663 decimal digits
takes 0.163 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L1F64EE215AA87215double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26712.343467.1642 %2000000600000000.50557.6176 %12.848869.6655 %
Target2630.663065.0794 %100007000000.00471.2756 %0.667765.5248 %
Difference+4+11.6804+2.0848 %+1990000+59300000+0.5008+6.3420%+12.1812+4.1407 %

Known prime factors (1 factor, 80.0 bits, 0.00332129% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
240727711698899109357673635584232579.953242990297945721943
59 × 479 × 127951 × 67198213
2014-03-021279516719821355,9570.37050.6698

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-10-08ANONYMOUSv4_computers2048204800--0.0010.655%
2010-11-09JossManual testing1500015000--0.0020.497%
2010-11-16JossManual testing2000020000--0.0020.617%
2010-12-21markrtiny9500019237506--0.0204.213%
2014-03-02mikrMSI2579.9530.5190.000%
2018-09-28alpertronManual testing20000006000000012---10.528%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-15ANONYMOUSv4_computers212590.016
2022-03-09LordJuliusManual testing21260
2009-01-15Sturle Sundegopher.ifi2602610.064
2012-06-03Sebastian HornbostelManual testing2612620.128
2013-12-04Jerry HallettManual testing2622630.408


ECM factoring results:
Total ECM effort:6.143 GHz-days
Estimated T-Level:21.186
DigitsB1CompleteFacMiss
20110002.5457.848%
25500000.23778.879%
302500000.01598.504%


ECM Summary

B1B2factorcurvesGHz-days
500005000000120.944
500007000000505.199


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-06ANONYMOUSv4_computers1F64EE215AA872150.163


PRP results:
dateuseridcompidcofactorsres64
2017-10-13kkmrkkblmbrbkc4.xlarge
1169889910935767363558423
B44A6D40B254B0FB
2017-11-03Oliver KruseGTX-0
1169889910935767363558423
B44A6D40B254B0FB


CERT results:
No CERT results for M2407277


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 95000, B2 = 1923750 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
TF factor-bounds graph:
263
262
261
260
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=21.19 ~= 54-bit
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Last modified: 2024-03-13T02:15:48+00:00