is 2 2442949 - 1
has 735401 decimal digits
takes 0.165 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L0A2CF991FE776759double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26712.163167.1642 %60000001800000001.51649.7122 %13.679570.3533 %
Target2630.653365.0794 %100007500000.00491.3068 %0.658265.5357 %
Difference+4+11.5098+2.0848 %+5990000+179250000+1.5114+8.4054%+13.0212+4.8175 %

Known prime factors (1 factor, 123.4 bits, 0.00505140% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
24429491406146861758010916660257047459179803338123.4032877970153609450947728047223784
23 × 3 × 19597 × 92153 × 520649 × 949261 × 134352359
2019-03-159492611343523597.009e+100.80491.3392

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-10-14ANONYMOUSv4_computers2048204800--0.0010.658%
2003-10-31Team Prime Ribv4_computers15000217500--0.0031.657%
2010-11-17JossManual testing2000020000--0.0020.619%
2011-01-18Oscar Östlin9500019475006--0.0204.233%
2014-01-20mikrMSI11720004800000012--0.3659.857%
2019-03-15Sid & AndyBullseye600000018000000012238123.4031.51612.939%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-15JohnBorleisIIIv4_computers212590.016
2016-02-23Mark RoseManual testing2592600.031
2009-01-16Sturle Sundehomilius.ifi2602610.063
2012-06-06Sebastian HornbostelManual testing2612620.126
2013-12-04Jerry HallettManual testing2622630.402
2015-02-27VictordeHollanderManual testing2632652.333
2015-10-25ramgeisManual testing2652663.059
2017-07-12Gordon SpenceManual testing2662676.118


ECM factoring results:
Total ECM effort:2.819 GHz-days
Estimated T-Level:20.587
DigitsB1CompleteFacMiss
20110001.26928.105%
25500000.11788.920%
302500000.00799.262%


ECM Summary

B1B2factorcurvesGHz-days
500005000000332.819


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-13JohnBorleisIIIv4_computers0A2CF991FE7767590.165
2018-05-24kkmrkkblmbrbkold0A2CF991FE7767590.165


PRP results:
dateuseridcompidcofactorsres64
2019-03-16artorollofourth
14061468617580109166602570474591798033
49C019FE933DFEE9
2019-03-16kkmrkkblmbrbkc5.large
14061468617580109166602570474591798033
49C019FE933DFEE9


CERT results:
No CERT results for M2442949


P-1 factor-bounds graph:
B1 = 6000000, B2 = 180000000 (P-1 stage 2)
B1 = 6000000 (P-1 stage 1)
B1 = 1172000, B2 = 48000000 (P-1 stage 2)
B1 = 1172000 (P-1 stage 1)
B1 = 95000, B2 = 1947500 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 15000, B2 = 217500 (P-1 stage 2)
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
109
TF factor-bounds graph:
267
266
265
263
262
261
260
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=20.59 ~= 52-bit
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Last modified: 2024-03-13T02:15:48+00:00