is 2 3832999 - 1
has 1153848 decimal digits
takes 0.403 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L5C42E23FC3CBF823double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2677.752167.1642%2000001303648501.11056.8283%8.862669.4063%2.2421%
PrimeNet2600.040163.3333%170003400000.00533.1926%0.045364.5040%1.1706%
GPU722640.928665.6250%240005000000.00762.2266%0.936266.3904%0.7654%
Difference+3+6.8235+1.5392%+176000+129864850+1.1029+4.6018%+7.9264+3.0159%+1.4768%

Known prime factors (1 factor, 66.3 bits, 0.00172994% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3832999913863557297847010732066.30911920999161464
23 × 17 × 23 × 2243 × 1699091
2012-09-01224316990916.97910.01440.0263

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-27T16:13:00Carsten Kossendeyleela20000270000---0.005--1.162%
2011-10-30T01:21:00Squeeky_SquirrelT7500_2200700001137500---0.020--2.369%
2022-05-25T22:18:32Jocelyn LaroucheManual testing200000130364850-
skipped known factor: 91386355729784701073
--1.110--6.828%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-04-21T00:00:00ANONYMOUSv4_computers21260--0.040--
2009-02-26T16:00:00S485122USB-A260261--0.040--
2011-03-09T13:05:00markroldgamer261262--0.080--
2012-04-20T00:55:00GrunwalderGIMPManual testing21263--0.416--


ECM factoring results:
Total ECM effort:0.450 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000030.450


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-09-06T00:00:00ANONYMOUSv4_computers5C42E23FC3CBF8230.403
1999-10-29T00:00:00ANONYMOUSv4_computers5C42E23FC3CBF8230.403


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T18:03:10kkmrkkblmbrbkManual testing
91386355729784701073
DE5E1E5A747688__no
2017-12-17T10:37:10Oliver KruseGTX-3
91386355729784701073
DE5E1E5A747688__no


P-1 factor-bounds graph:
B1 = 200000, B2 = 130364850 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 70000, B2 = 1137500 (P-1 stage 2)
B1 = 70000 (P-1 stage 1)
B1 = 20000, B2 = 270000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
263
262
261
260
250
260
270
280
290
2100
Last modified: 2022-05-25T22:18:32+00:00