is 2 10209449 - 1
has 3073351 decimal digits
takes 3.335 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L474A85ECDD2DF23Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27293.671466.6667 %2000000266304885069.62019.6796 %163.291669.8932 %
Target2685.838264.7059 %7000080000000.23782.6554 %6.076065.6431 %
Difference+4+87.8332+1.9608 %+1930000+2655048850+69.3823+7.0242%+157.2155+4.2501 %

Known prime factors:
No known factors for M10209449

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-10-23Massimo Cappelli (ik5pwa)v4_computers55000893750--0.0482.190%
2013-05-31NesowaEPC12500024687506--0.1203.259%
2020-12-19ViliamFManual testing100000030000000--1.0916.846%
2024-02-21Sid & AndyCombat_Carl20000002663048850--82.0512.969%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-07riccardo ubertiv4_computers212640.192
2013-09-18NesowaManual testing2642650.366
2015-04-25ThaManual testing2652660.732
2015-11-23VictordeHollanderManual testing2662671.464
2017-09-26ANONYMOUSManual testing2672682.928
2017-12-12ramgeisManual testing2682695.856
2020-07-28ViliamFManual testing26927011.71
2021-01-17ANONYMOUSManual testing27027123.42
2022-08-27Architects CubedGPU72_TF27127246.84


ECM factoring results:
Total ECM effort:1.011 GHz-days
Estimated T-Level:0.385
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021.011


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-06-26vidmarv4_computers474A85ECDD2DF23E3.335
2000-06-29vidmarv4_computers474A85ECDD2DF23E3.335
2003-10-23Massimo Cappelli (ik5pwa)v4_computers474A85ECDD2DF23E3.335


PRP results:
No PRP results for M10209449


CERT results:
No CERT results for M10209449


P-1 factor-bounds graph:
B1 = 2000000, B2 = 2663048850 (P-1 stage 2)
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 125000, B2 = 2468750 (P-1 stage 2)
B1 = 125000 (P-1 stage 1)
B1 = 55000, B2 = 893750 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
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109
1010
TF factor-bounds graph:
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271
270
269
268
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.38 ~= -15-bit
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Last modified: 2024-03-13T02:15:48+00:00