is 2 12085343 - 1
has 3638051 decimal digits
takes 4.653 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L262CCC4918757BBCdouble-checked
PRP22834B624DFA0794PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27279.131766.6667%140000065159640020.55738.0246%99.689069.3415%2.6749%
PrimeNet2640.294562.5000%5500015000000.07474.1181%0.369264.0443%1.5443%
GPU722684.932064.7059%8000020000000.10312.9442%5.035165.7450%1.0391%
Difference+4+74.1997+1.9608%+1320000+649596400+20.4542+5.0804%+94.6539+3.5965%+1.6357%

Known prime factors (1 factor, 130.8 bits, 0.00108211% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
12085343233230480864895904030368480872926673610340130.77796493116026949298845042495224557
17 × 71 × 233 × 941 × 1217 × 2087 × 11351 × 132283 × 95607581
2021-12-13132283956075811.342e+102.97775.4312

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-01-21T00:00:00ANONYMOUSv4_computers180000180000---0.100--0.880%
2015-03-04T13:52:00ThaManual testing3000006000000---0.341--3.015%
2021-12-13T11:16:21lycornblackhole_D140000065159640040130.77720.569.30641.118.025%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-02-23T00:00:00Team_Deutschlandv4_computers21264--0.295--
2013-09-21T09:45:00lycornManual testing264265--0.309--
2013-10-03T01:38:00NesowaManual testing265266--0.618--
2015-02-09T22:25:00ThaManual testing266267--1.237--
2015-05-28T22:12:00ThaManual testing267268--2.473--
2017-11-03T22:50:41ramgeisManual testing268269--4.947--
2021-08-06T15:22:49SRBaseManual testing269270--9.89--
2021-08-15T16:59:28SRBaseManual testing270271--19.79--
2021-10-24T23:35:20-Anonymous-Manual testing271272--39.57--


ECM factoring results:
Total ECM effort:1.171 GHz-days
Estimated T-Level:0.385
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021.171


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-02-25T00:00:00ANONYMOUSv4_computers262CCC4918757BBC4.653
2004-06-12T00:00:00ANONYMOUSv4_computers262CCC4918757BBC4.653


PRP results:
dateuseridcompidcofactorsres64PRP
2022-01-20T03:53:33kutensterra
2332304808648959040303684808729266736103
22834B624DFA0794no


P-1 factor-bounds graph:
B1 = 1400000, B2 = 651596400 (P-1 stage 2)
B1 = 1400000 (P-1 stage 1)
B1 = 300000, B2 = 6000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 180000 (P-1 stage 1)
104
105
106
107
104
105
106
107
108
109
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
2110
2120
2130
2140
Last modified: 2022-01-20T03:53:33+00:00