is 2 1150879 - 1
has 346450 decimal digits
takes 0.034 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE4B6569C0E8D9747double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26725.818568.6567%60000002400000000.80589.4598%26.624271.6217%2.9650%
PrimeNet2560.008362.5000%5000700000.00042.1633%0.008763.3112%0.8112%
GPU722600.133565.0000%5000260000.00030.7709%0.133765.2698%0.2698%
Difference+7+25.6850+3.6567%+5995000+239974000+0.8055+8.6888%+26.4905+6.3519%+6.3519%

Known prime factors (2 factors, 172.2 bits, 0.01496659% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1150879820271863745702126268464412686.08435636755199534535180
22 × 3 × 5 × 17 × 312 × 36355874395069
2018-09-079613635587439506922,635,98285,126158,992
1150879866262018475070335348097992686.16337634799943133480381
7 × 337 × 4397 × 337039 × 10765273
2015-10-183370391076527321,518,9200.03890.0471

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
115087971057036038665979211449084052778384848705601150753
59
52172.247
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-11-05T00:00:00ANONYMOUSv4_computers500001000000---0.004--1.743%
2012-02-02T01:47:00markrtiny50000010000000---0.044--4.427%
2015-10-18T07:52:36mikrMSI6000000240000000122686.1630.8060.0681.6129.460%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-07-12T00:00:00ANONYMOUSv4_computers21256--0.008--
2001-11-14T00:00:00ANONYMOUSv4_computers21257--0.017--
2003-05-04T00:00:00ANONYMOUSv4_computers21258--0.033--
2022-03-07T17:31:12LordJuliusManual testing258260--0.100--
2009-04-15T05:20:00Sturle Sundegraun.ifi260261--0.133--
2011-05-09T14:44:00XyzzyManual testing261262--0.267--
2012-10-07T08:33:00dbaughManual testing262263--0.853--
2014-12-28T15:46:00Matthias WurtingerManual testing263264--1.706--
2015-01-10T22:22:00lycornManual testing264265--3.247--
2015-08-04T15:05:00omylistManual testing265266--6.493--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.747 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:17.747 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.7310.000%
25500001.34925.941%
302500000.10889.793%
3510000000.00799.295%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002147.580
500005000000672.373
25000025000000447.793


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-01-14T00:00:00ANONYMOUSv4_computersE4B6569C0E8D97470.034


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T07:14:43Oliver KruseGTX-1
86626201847507033534809799
4223C662E689BD__no
2017-10-17T06:01:38Oliver KruseThreadripper
86626201847507033534809799
4223C662E689BD__no
2018-01-02T15:36:40ATHec2-1xf
86626201847507033534809799
4223C662E689BD__no
2018-09-08T12:47:33ANONYMOUSdory
82027186374570212626846441
86626201847507033534809799
88C18881D61028__no
2018-09-11T13:34:34Oliver KruseGTX-1
82027186374570212626846441
86626201847507033534809799
88C18881D61028__no


P-1 factor-bounds graph:
B1 = 6000000, B2 = 240000000 (P-1 stage 2)
B1 = 6000000 (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)
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TF factor-bounds graph:
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Last modified: 2022-03-07T17:31:12+00:00