is 2 1069217 - 1
has 321867 decimal digits
takes 0.032 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LAC93ADC5B2BE70B6double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26727.790468.6567 %9000001065926400.28627.0725 %28.076570.8735 %
Target2600.143665.0000 %45001000000.00040.6510 %0.144165.2279 %
Difference+7+27.6467+3.6567 %+895500+106492640+0.2857+6.4215%+27.9324+5.6456 %

Known prime factors (1 factor, 92.8 bits, 0.00867669% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
106921784593141698631291578778237772892.7733955845338160134546064
24 × 3 × 7 × 11773349220714686149
2008-03-141611773349220714686149938,045,4622.757e+105.149e+10

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-02-17Jossv4_computers10000145000--0.0011.744%
2024-02-20USAFSSUSAFSACS900000106592640--0.29612.632%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-24ANONYMOUSv4_computers212570.018
2003-04-03ANONYMOUSv4_computers212580.036
2022-04-12LordJuliusManual testing21261
2022-04-12LordJuliusManual testing261262
2022-04-12LordJuliusManual testing262263
2022-04-12LordJuliusManual testing263264


ECM factoring results:
Total ECM effort:17.540 GHz-days
Estimated T-Level:25.654
DigitsB1CompleteFacMiss
201100014.6920.000%
25500001.60920.008%
302500000.13187.737%
3510000000.00999.133%


ECM Summary

B1B2factorcurvesGHz-days
10.084
5000050000002789.74
25000025000000447.714


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-03-03ANONYMOUSv4_computersAC93ADC5B2BE70B60.032


PRP results:
dateuseridcompidcofactorsres64
2017-09-28Oliver KruseGTX-2
8459314169863129157877823777
E4594BC302D0000A
2017-10-19kkmrkkblmbrbkc4.xlarge
8459314169863129157877823777
E4594BC302D0000A


CERT results:
No CERT results for M1069217


P-1 factor-bounds graph:
B1 = 900000, B2 = 106592640 (P-1 stage 2)
B1 = 900000 (P-1 stage 1)
B1 = 10000, B2 = 145000 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
TF factor-bounds graph:
264
263
262
261
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.65 ~= 69-bit
250
260
270
280
290
2100
JSON version of this page
Last modified: 2024-03-03T02:29:32+00:00