is 2 105212563 - 1
has 31672138 decimal digits
takes 418.914 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-
PRP7204890C6FF85C__

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276145.457964.4737%434000213380009.08093.6259%154.538865.7618%3.2618%
PrimeNet2729.089562.5000%450000220000009.37655.3972%18.466064.5240%2.0240%
GPU72276145.457964.4737%6500002400000011.09733.9280%156.555265.8691%1.3955%
Difference----216000-2662000-2.0164-0.3020%-2.0164-0.1073%-0.1073%

Known prime factors:
No known factors for M105,212,563

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-07-21T15:53:00David Kirkbycanary43400021338000---9.081--3.626%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-20T08:59:00Dalos Leedalosdesk263264--0.019--
2010-08-31T04:17:00Donna NoblePH2-940-v3-MVB264265--0.036--
2012-05-10T12:09:00LingUaanRoadRunner265266--0.071--
2013-09-09T21:50:00willmoreManual testing266267--0.142--
2013-09-24T17:53:00PEDManual testing267268--0.284--
2013-09-29T06:51:00PEDManual testing268269--0.568--
2014-06-15T17:48:00webbertManual testing269270--1.136--
2014-06-27T15:50:00C.D.B.i7-2600K_4500MHz270271--2.273--
2014-12-31T16:27:00shaugeManual testing271272--4.546--
2020-03-27T19:42:46Will HockensmithManual testing272273--9.091--
2020-04-02T16:24:33SRBaseManual testing273274--18.18--
2021-03-28T21:09:03TheJudgerManual testing274275--36.36--
2021-03-28T21:09:03TheJudgerManual testing275276--72.73--


ECM factoring results:
Exponent "105212563" not found


Lucas-Lehmer results:
Exponent "105212563" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2021-07-31T21:10:56David Kirkbycanary7204890C6FF85C__no


P-1 factor-bounds graph:
B1 = 434000, B2 = 21338000 (P-1 stage 2)
B1 = 434000 (P-1 stage 1)
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108
TF factor-bounds graph:
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2100
Last modified: 2021-07-31T21:10:56+00:00