is 2 39979 - 1
has 12035 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual267743.238176.1194%200000000040837035397158023,032.911130.8067%23,776.149283.4762%7.3568%
PrimeNet2400.000060.0000%500100000.00004.4129%0.000061.7652%1.7652%
GPU722440.000163.6364%500100000.00001.9124%0.000164.3318%0.6954%
Difference+23+743.2381+12.4830%+1999999500+408370353961580+23,032.9111+28.8943%+23,776.1492+19.1444%+6.6614%

Known prime factors (5 factors, 372.1 bits, 0.93081951% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3997945096313825.427564
22 × 3 × 47
-4471.255e-106.566e-98.427e-9
39979113860193926.7631424
24 × 89
2008-08-2616892.925e-102.068e-83.371e-8
399791641703778256127211857.1882053207656840
23 × 3 × 5 × 149 × 114832643
2009-04-021491148326430.83570.00650.0121
39979201513610890778578276053828692931100.66925202432638482525610452216
23 × 32 × 13 × 17 × 47 × 293 × 59601401 × 1929726433
2010-04-305960140119297264334.371e+120.16720.2033
39979620700728441183654187869611540744774862537416132949162.08677628345936764758271576278989062354593979016
23 × 3 × 7 × 53 × 617 × 86843 × 178333 × 997343 × 159575179 × 5732889880259
2022-08-0815957517957328898802594.642e+12323.48603.87

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
3997951346749017684091652.189
3997974034787437520906829976732582.614
39979186924709041071847563151532683.951
3997984296151863501058931961686633088933109.377
399799087520870490759579631923863583399277738126.095
3997922944378628150950842777096213362531729739127.431
399791034706880205605890453489720068911513354982596147152.858
3997933082565636942625625174702947811100872913042380948157.857
3997914919017348066090082346990838165120698394597809913
316217
56183.283
3997937667873083574552836091373363554408729323474777064
535137
56184.619
3997927991314329111620159739928805229838620315519292140
5079977
57187.513
3997970673104735553760014276092228864227429590058670613
3076497
57188.849
3997916986821946211531935314142698027124085875036967941
07497737649881
64210.046
3997931870964518363145899306791235697288346679787474983
416237361655561
65214.276
3997910190067310482216016926790814825769572733018672393
59922010928666209
67219.274
3997945953446492457419443294385667090794511784447548510
620962660428552033587417
74244.701
3997911602430306544960387549756690466893849249090435113
3897916629286043789318337
75246.037
3997912507964507071950324413776830384813441534997951546
457069204260303516817737968641
80262.755
3997952322682866463748220954513078713916116351179722717
96165358362188397254805781991481
82271.464
3997956406308240380738535021522145518145740606946807729
7862033897983580869413475385818720633
87288.182
3997914241592528123621288241652417665431227221690830176
84250365811434580663446390932892207713
88289.518
3997964224331426672412830800877706424701590276349006688
473489666996952828622526104230068994286462169
95314.944
3997920534372589553558617393786963542308965922293749426
93665571275082849905047861404769053011708682161
97319.943
3997992602449355712780967383746116322355386993809260210
07060571954494530025005863789008490732960739554997
2393
104345.370
3997923380476261804779680132697406698112625255427893124
44647018228361893811787811737842554963403818106271
17073
105346.706
3997910543732755914182893513040037867463834577704812172
70585971085429134406091462477148218033493621267154
7197811651849
113372.132
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-11-09T02:17:39kkmrkkblmbrbkManual testing200000000500000000012-
skipped known factor: 45096313
skipped known factor: 113860193
skipped known factor: 164170377825612721
skipped known factor: 2015136108907785782760538286929
--0.478--12.574%
2022-07-18T01:51:03nordisweet16_ccx220000000002000000000-
skipped known factor: 45096313
skipped known factor: 113860193
skipped known factor: 164170377825612721
skipped known factor: 2015136108907785782760538286929
--2.070--11.171%
2022-08-08T04:56:55nordisweet16_30.8b14200000000040837035397158049162.08623,0335.70811e-546,06630.807%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-05-08T11:41:05ATHec2-P_11000000001000000000027--0.705


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-08-26T19:59:00ANONYMOUSManual testing??26.76396.89255e-116.17978e-51.49242e-10


ECM factoring results:
Total ECM effort:22.838 GHz-days
Estimated T-Level:34.810
DigitsB1CompleteFacMiss
2011000291.7440.000%
255000054.9310.000%
302500008.0500.032%
3510000000.96238.214%
4030000000.09590.904%
45110000000.00899.206%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
10.00000e+0
5000050000002490.185
250000250000005832.171
10000001000000001,37520.48


Lucas-Lehmer results:
No L-L results for M39979


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21T19:51:27Oliver KrusePRP
45096313
113860193
164170377825612721
2015136108907785782760538286929
913D38AC83C09D57no
2017-09-21T21:29:15Oliver KruseManual testing
45096313
113860193
164170377825612721
2015136108907785782760538286929
913D38AC83C09D57no
2017-10-02T10:50:51kkmrkkblmbrbkManual testing
45096313
113860193
164170377825612721
2015136108907785782760538286929
913D38AC83C09D__no
2017-12-07T03:16:14ATHxps
45096313
113860193
164170377825612721
2015136108907785782760538286929
913D38AC83C09D__no
2020-04-17T13:49:10Oliver KruseManual testing
45096313
113860193
164170377825612721
2015136108907785782760538286929
40B061E3C62FA5__no
2022-08-08T17:09:22nordisweet16_30.8b14
45096313
113860193
164170377825612721
2015136108907785782760538286929
6207007284411836541878696115407447748625374161329
40B061E3C62FA524no


P-1 factor-bounds graph:
B1 = 2000000000, B2 = 408370353971580 (P-1 stage 2)
B1 = 2000000000 (P-1 stage 1)
B1 = 200000000, B2 = 5000000000 (P-1 stage 2)
B1 = 200000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-08-08T17:09:22+00:00