is 2 1830481 - 1
has 551030 decimal digits
takes 0.099 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LA05F41DFCBBA786Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26832.562469.1176 %18304811830481000.92068.0097 %33.483171.5912 %
Target2610.167865.5738 %90007000000.00371.5947 %0.171566.1228 %
Difference+7+32.3946+3.5439 %+1821481+182348100+0.9170+6.4150%+33.3116+5.4685 %

Known prime factors (1 factor, 67.3 bits, 0.00367682% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
18304811821150938565677267212167.30349745147274560
26 × 5 × 89 × 1746669497
2019-07-0189174666949731.3617.485813.981

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-02-10Carsten Kossendeymother10000016750006--0.0154.945%
2014-05-19JossManual testing135064135064--0.0112.340%
2014-09-22JossManual testing170128170128--0.0132.590%
2015-06-19mikrMSI27800009176000012--0.60012.881%
2018-09-10JossManual testing183048118304810012--0.92113.747%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-01-16ANONYMOUSv4_computers212580.021
2016-02-23Mark RoseManual testing2582600.063
2010-04-13Architects Cubeda3_lm2602610.084
2011-01-21GrunwalderGIMPManual testing212630.872
2016-02-23Mark RoseManual testing2612630.704
2015-04-26snme2pm1Manual testing2632653.114
2015-09-04ramgeisManual testing2652664.082
2018-03-26TJAOIManual testing2662678.165
2019-07-01TJAOIManual testing267268
67.303
21
4.955


ECM factoring results:
Total ECM effort:39.098 GHz-days
Estimated T-Level:25.711
DigitsB1CompleteFacMiss
201100014.9950.000%
25500001.68218.597%
302500000.14286.749%
3510000000.01099.030%


ECM Summary

B1B2factorcurvesGHz-days
500005000000513.417
50000660000020015.57
250000400000004720.11


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-06ANONYMOUSv4_computersA05F41DFCBBA786A0.099
2015-07-10MadPooManual testingA05F41DFCBBA786A0.099


PRP results:
dateuseridcompidcofactorsres64
2019-07-02Niels_Mache_NextcloudSuperDry-X
182115093856567726721
00945EB711CC5943
2019-07-04artorollofirst
182115093856567726721
00945EB711CC5943


CERT results:
No CERT results for M1830481


P-1 factor-bounds graph:
B1 = 1830481, B2 = 183048100 (P-1 stage 2)
B1 = 2780000, B2 = 91760000 (P-1 stage 2)
B1 = 2780000 (P-1 stage 1)
B1 = 1830481 (P-1 stage 1)
B1 = 100000, B2 = 1675000 (P-1 stage 2)
B1 = 170128 (P-1 stage 1)
B1 = 135064 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
268
267
266
265
263
261
260
258
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.71 ~= 69-bit
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260
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Last modified: 2024-03-13T02:15:48+00:00