is 2 168828523 - 1
has 50822450 decimal digits
takes 1,148.972 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP56C58B1BCA0F41__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual28423,206.194966.6667%22000009000000068.91442.9620%23,275.109467.6540%0.9873%
PrimeNet27422.661362.1622%7000004000000028.03685.5292%50.698164.2543%2.0921%
GPU72278362.595864.1026%10000004000000030.83603.9993%393.431765.5382%1.4356%
Difference+6+22,843.5992+2.5641%+1200000+50000000+38.0784-1.0372%+22,881.6776+2.1158%+2.1158%

Known prime factors:
No known factors for M168828523

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-11-29T14:33:39Tucker KaoDozenal Behemoth Lab220000090000000---68.91--2.962%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-07-08T12:26:00sasaki3MATE_J2263264--0.012--
2011-02-18T00:11:00Mr-PlonkLinux-i7264265--0.022--
2013-03-24T21:18:00KayJongsmaHenk265266--0.044--
2015-06-04T02:41:00La GüiraManual testing266268--0.266--
2015-06-04T02:41:00La GüiraManual testing268269--0.354--
2015-06-04T02:41:00La GüiraManual testing269270--0.708--
2018-02-27T12:06:38Oliver KruseManual testing270276--89.23--
2021-11-25T04:50:17Tucker KaoManual testing276277--90.65--
2021-11-30T23:52:25Tucker KaoManual testing277278--181.3--
2021-12-11T04:39:48Tucker KaoManual testing278279--362.6--
2021-12-12T05:06:38Tucker KaoManual testing279280--725.2--
2021-12-13T04:25:00Tucker KaoManual testing280281--1,450--
2021-12-16T03:43:32Tucker KaoManual testing281282--2,901--
2021-12-19T05:33:55Tucker KaoManual testing282283--5,802--
2021-12-24T15:52:40Tucker KaoManual testing283284--11,603--


ECM factoring results:
No ECM results for M168828523


Lucas-Lehmer results:
No L-L results for M168828523


PRP results:
dateuseridcompidcofactorsres64PRP
2021-12-25T05:18:54Tucker KaoOld_Timer_201356C58B1BCA0F41__no


P-1 factor-bounds graph:
B1 = 2200000, B2 = 90000000 (P-1 stage 2)
B1 = 2200000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-12-25T05:18:54+00:00