is 2 1802513 - 1
has 542611 decimal digits
takes 0.098 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L29352D9E0B5AA54Fdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26716.484768.6567%500000150000000.10155.0593%16.586270.2425%1.5858%
PrimeNet2570.010763.1579%80001500000.00122.8709%0.011964.2156%1.0577%
GPU722610.170465.5738%90001300000.00121.5548%0.171666.1090%0.5353%
Difference+6+16.3143+3.0829%+491000+14870000+0.1002+3.5045%+16.4145+4.1334%+4.1334%

Known prime factors (1 factor, 91.5 bits, 0.00507489% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
180251334426231402589224856738778472891.476954950987942645208571
7 × 22697 × 6010555126496549
2013-07-10226976010555126496549536,618,70725,759,73748,112,014

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00ANONYMOUSv4_computers25000387500---0.004--1.198%
2011-02-07T12:28:00Carsten Kossendeyleela1000001650000---0.015--2.477%
2016-03-16T12:35:57alpertronManual testing5000001500000012---0.101--5.059%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-01-25T00:00:00ANONYMOUSv4_computers21258--0.021--
2010-04-11T14:32:00Architects CubedManual testing260261--0.085--
2010-12-13T03:33:00GrunwalderGIMPManual testing21263--0.885--


ECM factoring results:

Old Calculation Method

Total ECM effort:18.134 GHz-days
Estimated T-Level:24.696
DigitsB1CurvesCompleteFacMiss
2011000263 / 1002.6307.113%
2550000263 / 2800.93939.025%

New Calculation Method

Total ECM effort:18.134 GHz-days
Estimated T-Level:24.696
DigitsB1CompleteFacMiss
20110008.4840.021%
25500000.76746.451%
302500000.04795.388%
3510000000.00299.784%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000026318.13


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-21T00:00:00ANONYMOUSv4_computers29352D9E0B5AA54F0.098


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T19:00:20Oliver KruseGTX-0
3442623140258922485673877847
623FDE3B600118__no
2017-11-05T12:18:23kkmrkkblmbrbkc4.xlarge
3442623140258922485673877847
623FDE3B600118__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 100000, B2 = 1650000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 25000, B2 = 387500 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
TF factor-bounds graph:
267
263
261
258
250
260
270
280
290
2100
Last modified: 2021-01-29T12:54:54+00:00