is 2 73281541 - 1
has 22059942 decimal digits
takes 202.601 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275104.418064.0000%730000160600006.27473.8871%110.692665.3993%3.9708%
PrimeNet2703.260761.4286%320000140000004.27075.5418%7.531463.5661%2.1376%
GPU7227452.207863.5135%500000170000005.60824.1265%57.816065.0191%1.5056%
Difference+1+52.2102+0.4865%+230000-940000+0.6665-0.2394%+52.8767+0.3802%+0.3802%

Known prime factors (3 factors, 223.9 bits, 0.00030551% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
73281541264689409203510471266492374.487180597600426764
22 × 41 × 5701 × 193159951		2016-05-20570119315995192.03242.21078.796
73281541296219899320032452195432374.649202110855802031
11 × 18373714163821		2016-05-20111837371416382167.2494,013,0257,495,214
73281541316440055032864516193272374.744215907069307443
3 × 71 × 149 × 6803008139		2016-05-20149680300813990.2131,485.92,775.2

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
7328154178406270145342742941561144252242391533090140745149.136
7328154183758331214975249095599854512817569650514522345149.231
7328154193735841242660655452478755535928616397690756145149.393
7328154124810884439713899705123989004919731468634228905114
130970077732693089		68223.880
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-09-13T15:04:00TheJudgerManual testing73000016060000---6.275--3.887%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-06-28T14:24:00George WoltmanManual testing?264--0.027--
2010-06-05T06:46:00abah salma alif sampayyaalifiyya619264265--0.051--
2010-08-05T23:49:00Bold_Seekerpatws10265266--0.102--
2010-10-07T03:17:00Serhat Sakaryat4.mozanim.com266267--0.204--
2010-10-12T18:57:00arnaudATTAX15267268--0.408--
2010-10-15T22:34:00seekuaseekua-home268269--0.816--
2013-05-05T11:25:00ManpowreManual testing269270--1.632--
2014-07-21T02:50:00For ResearchManual testing270271--3.263--
2015-01-10T20:42:00RichD0Manual testing271272--6.526--
2015-09-09T06:27:00BdotManual testing272273--13.05--
2015-12-03T00:59:12GregManual testing273274--26.11--
2016-05-20T09:34:06dh1Manual testing27427574.6492315.04412.730.64
2016-05-20T09:34:07dh1Manual testing27427574.4872339.82412.781.13


ECM factoring results:
Exponent "73281541" not found


Lucas-Lehmer results:
Exponent "73281541" not found


PRP results:
Exponent "73281541" not found


P-1 factor-bounds graph:
B1 = 730000, B2 = 16060000 (P-1 stage 2)
B1 = 730000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2016-05-20T09:34:07+00:00