is 2 62319197 - 1
has 18759948 decimal digits
takes 146.392 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L566C320A35C24B__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27461.391464.8649%550000105875003.73613.7291%65.127666.1751%1.3102%
PrimeNet2703.834362.8571%260000120000003.06435.1459%6.898664.7685%1.9113%
GPU7227461.391464.8649%400000130000003.70073.7242%65.092266.1734%1.3085%
Difference---+150000-2412500+0.0354+0.0049%+0.0354+0.0017%+0.0017%

Known prime factors:
No known factors for M62319197

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-06-16T23:55:00Team_InspectorSpudBoy355000010587500---3.736--3.729%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-30T00:00:00ANONYMOUSv4_computers21259--0.001--
2003-07-06T00:00:00ANONYMOUSv4_computers21259--0.001--
2016-02-23T17:18:20Mark RoseManual testing259263--0.024--
2008-12-31T09:44:00DerekDerek_Desk263264--0.032--
2009-08-12T14:49:00Sturle Sundedittersdorf.ifi264265--0.060--
2009-08-16T18:05:00ANONYMOUS265266--0.120--
2009-08-18T16:28:00PrimeCruncherApollo8266267--0.240--
2009-08-23T04:51:00SAHS Physics Clubphysicsclub10267268--0.480--
2009-08-24T10:20:00xkeyxkey-2009268269--0.959--
2012-04-19T17:45:00ANONYMOUS269270--1.919--
2013-02-22T07:40:00Carsten KossendeyManual testing270271--3.837--
2013-03-12T02:14:00kdgehmanManual testing271272--7.674--
2013-03-12T02:14:00kdgehmanManual testing272273--15.35--
2013-05-29T18:58:00Tom DuellManual testing273274--30.70--


ECM factoring results:
No ECM results for M62319197


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2014-04-05T13:50:00curtisccsc134-03l566C320A35C24B__146.4


PRP results:
No PRP results for M62319197


P-1 factor-bounds graph:
B1 = 550000, B2 = 10587500 (P-1 stage 2)
B1 = 550000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2016-02-23T17:18:20+00:00