is 2 62092859 - 1
has 18691814 decimal digits
takes 145.861 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L3B65E4E6DC017587double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27461.615264.8649%625000137500004.56453.9919%66.179866.2674%1.4026%
PrimeNet2703.848362.8571%260000120000003.06435.1435%6.912664.7676%1.9105%
GPU7227461.615264.8649%400000130000003.70073.7225%65.316066.1728%1.3079%
Difference---+225000+750000+0.8638+0.2695%+0.8638+0.0947%+0.0947%

Known prime factors:
No known factors for M62092859

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-03-14T04:48:00kdgehmani5-2500k_262500013750000---4.565--3.992%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-30T00:00:00ANONYMOUSv4_computers21259--0.001--
2004-10-18T00:00:00ANONYMOUSv4_computers21261--0.005--
2016-02-23T17:18:14Mark RoseManual testing261263--0.021--
2008-12-28T20:09:00DerekDerek_Desk263264--0.032--
2009-08-12T07:28:00ANONYMOUSHHS-C0264265--0.060--
2009-08-14T05:34:00ANONYMOUSHHS-C0265266--0.120--
2009-08-16T03:41:00PrimeCruncherApollo4266267--0.241--
2009-12-20T14:43:00arnaudSRV-330267268--0.481--
2010-02-25T05:16:00HowardTErwin268269--0.963--
2011-12-03T21:51:00hanssti7_860269270--1.926--
2013-02-16T15:50:00XyzzyManual testing270271--3.851--
2013-02-24T09:45:00bcp19Manual testing271272--7.702--
2013-03-02T17:18:00RichD0Manual testing272273--15.40--
2013-06-03T07:21:00Juergen KampmeierManual testing273274--30.81--


ECM factoring results:
No ECM results for M62092859


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2014-06-12T20:15:00curtiscwcm200--58l3B65E4E6DC017587145.9
2022-07-28T23:04:19BobDWinMac3B65E4E6DC017587145.9


PRP results:
No PRP results for M62092859


P-1 factor-bounds graph:
B1 = 625000, B2 = 13750000 (P-1 stage 2)
B1 = 625000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-07-28T23:04:19+00:00