is 2 1163473 - 1
has 350241 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-L921CEE5C11A73FB8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26725.539068.6567%500000100000000.04524.4332%25.584270.0462%1.3895%
PrimeNet2560.008362.5000%5000800000.00042.2556%0.008763.3458%0.8458%
GPU722600.132065.0000%5000280000.00030.7971%0.132365.2790%0.2790%
Difference+7+25.4070+3.6567%+495000+9972000+0.0450+3.6361%+25.4519+4.7672%+4.7672%

Known prime factors (1 factor, 83.5 bits, 0.00718059% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1163473141032678382085258429727532683.5446060848785579263912
23 × 3 × 192 × 191 × 3662533771313
2015-12-0236136625337713131,994,1958,873.116,572

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--1.746%
2012-02-05T23:09:00markrtiny50000010000000---0.045--4.433%


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--
2022-03-07T17:31:14LordJuliusManual testing258260--0.099--
2009-04-09T04:56:00Sturle Sundebruckner.ifi260261--0.132--
2011-05-09T14:45:00XyzzyManual testing261262--0.264--
2012-10-11T11:55:00dbaughManual testing262263--0.844--
2014-12-31T09:45:00Matthias WurtingerManual testing263264--1.687--
2015-01-03T11:50:00lycornManual testing264265--3.211--
2015-09-17T03:04:00omylistManual testing265266--6.423--


ECM factoring results:

Old Calculation Method

Total ECM effort:18.391 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:18.391 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.7310.000%
25500001.34925.941%
302500000.10889.793%
3510000000.00799.295%


ECM Summary

B1B2factorcurvesGHz-days
50000500000028010.28
50000500000010.037
25000025000000448.076


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-07-27T00:00:00Ethan O'Connorv4_computers921CEE5C11A73FB80.036


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T08:33:40Oliver KruseGTX-2
14103267838208525842972753
AE36943F0FD05A__no
2017-10-17T10:40:20Oliver KruseThreadripper
14103267838208525842972753
AE36943F0FD05A__no
2018-01-05T23:46:08ATHec2-1xf
14103267838208525842972753
AE36943F0FD05A__no


P-1 factor-bounds graph:
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)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
267
266
265
264
263
262
261
260
258
257
256
250
260
270
280
290
2100
Last modified: 2022-03-07T17:31:14+00:00