is 2 1675771 - 1
has 504458 decimal digits
takes 0.079 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
Actual26717.731568.6567%500000150000000.08805.0151%17.819570.2286%1.5719%
PrimeNet2570.011563.1579%70001200000.00092.5712%0.012464.1052%0.9473%
GPU722610.183365.5738%7000900000.00081.2547%0.184166.0057%0.4320%
Difference+6+17.5482+3.0829%+493000+14910000+0.0872+3.7603%+17.6354+4.2229%+4.2229%

Known prime factors (5 factors, 240.0 bits, 0.01432309% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
167577117562080091030.710524
22 × 131
-41319.504e-117.451e-79.387e-7
167577125195585654631341.196751761
34 × 9281
2008-07-158192813.005e-73.973e-56.444e-5
167577188989070690571343.0172655168
26 × 3 × 13829
2008-07-1564138291.197e-65.554e-59.600e-5
16757711701775230559410171857.24050775888548
22 × 7 × 11 × 349 × 472369
2015-05-023494723690.01220.00180.0033
16757712677630180856964841932167.86079892484738576
24 × 3 × 1664426765387
2018-02-0816166442676538725.0526,188.211,558

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
167577144248689318106713931672271.906
1675771156283318660246194775132373.727
1675771224213175291018047961783912684.213
16757712988671289426257690870051532787.950
16757714287722358648733566920612958713098.436
16757714702475568761120138828885017373098.569
1675771151439396291712411744253781096931100.257
167577167464460573204075811253773522635933109.056
1675771238279821447484178300441915991600134110.876
16757713937649741694068015940310286693351935114.923
16757714556724718380696495647664841808084428138125.099
167577175301323466272763079331179452756883083939129.146
1675771265959080645630237829964150090908585072140130.966
1675771118481625981525728731167049391925310370923143139.766
1675771381560428075329686010104050333918990596364743141.453
1675771418468930809161686832020101103753272345200943141.586
1675771600359965105003016469050747274751107113967346346152.073
16757718002556445228448696654662637331075913577404652947155.809
167577111480934794653060330884821651911798028819624766710
3
51166.296
167577140549869808144747587210232094360646154550973051301
7
51168.116
167577167009947970336244988639998811976765564253137242488
23
52172.163
167577110543569790003668234921058229913528177951663293365
365167
56182.782
167577120162909637176474929460113841624109859803437831671
3854427927
60197.005
167577171214006120971099143942035570865010511037470671439
2134153153
60198.826
167577110216777180352059526428964286186259167732219705004
84831568131871
64209.312
167577117942785910302724379959294248975276416120998613277
13199582969221018354839
73240.022
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-05-02T13:08:00alpertronManual testing50000015000000121857.2400.0340.1580.0685.015%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:45:00J FeitsmaManual testing??41.196131.25663e-70.1722.73697e-7
2008-07-15T07:45:00J FeitsmaManual testing??43.017134.97655e-70.1721.08390e-6


ECM factoring results:

Old Calculation Method

Total ECM effort:14.897 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:14.897 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.0970.030%
25500000.73248.105%
302500000.04595.594%
3510000000.00299.794%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024814.72
50000500000030.178


Lucas-Lehmer results:
No L-L results for M1675771


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T23:41:07Oliver KruseGTX-1
1756208009
2519558565463
8898907069057
170177523055941017
79CB631E963BCF8Fno
2017-10-03T00:14:33kkmrkkblmbrbkManual testing
1756208009
2519558565463
8898907069057
170177523055941017
79CB631E963BCF__no
2017-11-14T10:12:45ATHec2-1xf
1756208009
2519558565463
8898907069057
170177523055941017
79CB631E963BCF__no
2018-02-10T21:40:19Oliver KruseGTX-5
1756208009
2519558565463
8898907069057
170177523055941017
267763018085696484193
D25156BF8BE3D6__no
2018-02-11T09:55:53kkmrkkblmbrbkc5.large
1756208009
2519558565463
8898907069057
170177523055941017
267763018085696484193
D25156BF8BE3D6__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
267
2
230
240
250
260
270
280
290
2100
Last modified: 2020-01-13T11:53:08+00:00