is 2 1161691 - 1
has 349704 decimal digits
takes 0.036 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L1D930FD49B9043F4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26725.578268.6567%150000005000000001.842011.0011%27.420272.1048%3.4481%
PrimeNet2560.008362.5000%5000800000.00042.2549%0.008763.3456%0.8456%
GPU722600.132265.0000%5000260000.00030.7727%0.132565.2704%0.2704%
Difference+7+25.4459+3.6567%+14995000+499974000+1.8417+10.2284%+27.2877+6.8344%+6.8344%

Known prime factors (2 factors, 185.8 bits, 0.01599261% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11616917388856896215232973487933512789.255318021612296868658425
3 × 52 × 132 × 31 × 9377 × 86314360493
2018-06-01937786314360493174,847,312209.11390.56
11616911143403592741974306142790447373096.52949212897093201819853248
26 × 3 × 180731 × 4464371 × 317676269
2018-01-1544643713176762692.759e+100.95731.4374

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
116169184484455213888105557606136378866765615495114351897
143687
56185.785
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-03-16T00:00:00Jocelyn Larouchev4_computers10001000---4.44667e-5--0.005%
2002-06-09T00:00:00ANONYMOUSv4_computers500001000000---0.005--1.745%
2012-02-05T09:15:00markrtiny50000010000000---0.045--4.432%
2016-04-07T02:13:03Jocelyn LaroucheManual testing31739065713030812---0.272--7.256%
2018-01-15T16:22:07mikrColorovo15000000500000000123096.5291.8420.0713.68411.001%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-07-12T00:00:00ANONYMOUSv4_computers21256--0.008--
2001-11-10T00:00:00ANONYMOUSv4_computers21257--0.017--
2003-05-04T00:00:00ANONYMOUSv4_computers21258--0.033--
2016-02-23T16:28:23Mark RoseManual testing258260--0.099--
2009-02-15T19:03:00Sturle Sundebruckner.ifi260261--0.132--
2011-05-09T14:45:00XyzzyManual testing261262--0.264--
2012-10-11T11:55:00dbaughManual testing262263--0.845--
2014-12-31T09:44:00Matthias WurtingerManual testing263264--1.690--
2015-01-09T08:14:00lycornManual testing264265--3.216--
2015-09-17T03:04:00omylistManual testing265266--6.433--


ECM factoring results:

Old Calculation Method

Total ECM effort:18.387 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:18.387 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.7310.000%
25500001.34925.941%
302500000.10889.793%
3510000000.00799.295%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002469.028
500005000000351.285
25000025000000448.074


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-07-27T00:00:00Ethan O'Connorv4_computers1D930FD49B9043F40.036
2016-06-01T18:49:07MadPooManual testing1D930FD49B9043F40.036


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-16T02:04:14ANONYMOUSc5
114340359274197430614279044737
8BCC67D22BC75A__no
2018-01-21T07:08:53Oliver KruseGTX-5
114340359274197430614279044737
8BCC67D22BC75A__no
2018-06-01T15:42:01axnL
738885689621523297348793351
114340359274197430614279044737
8BCC67D22BC75A__no


P-1 factor-bounds graph:
B1 = 15000000, B2 = 500000000 (P-1 stage 2)
B1 = 15000000 (P-1 stage 1)
B1 = 3173906, B2 = 57130308 (P-1 stage 2)
B1 = 3173906 (P-1 stage 1)
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
102
103
104
105
106
107
108
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
266
265
264
263
262
261
260
258
257
256
250
260
270
280
290
2100
Last modified: 2021-02-19T17:09:05+00:00