is 2 61040929 - 1
has 18375151 decimal digits
takes 143.390 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE5F17A65D9FBAF8Cdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27462.677164.8649%575000109250003.87933.7641%66.556366.1874%1.3225%
PrimeNet2703.914662.8571%260000120000003.06435.1326%6.978964.7635%1.9064%
GPU7227462.677164.8649%400000130000003.70073.7144%66.377866.1699%1.3051%
Difference---+175000-2075000+0.1785+0.0497%+0.1785+0.0174%+0.0174%

Known prime factors:
No known factors for M61040929

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-04-17T07:37:00kurlyslice57500010925000---3.879--3.764%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-06T00:00:00ANONYMOUSv4_computers21259--0.001--
2003-10-08T00:00:00ANONYMOUSv4_computers21260--0.003--
2004-04-09T00:00:00ANONYMOUSv4_computers21262--0.010--
2016-02-23T17:06:38Mark RoseManual testing262263--0.016--
2009-02-25T19:08:00jpinedadck185d1263264--0.032--
2009-03-02T12:08:00KWSN-Sir Papa SmurphMaria264265--0.061--
2009-03-02T17:22:00NoPa265266--0.122--
2009-09-25T04:14:00Jeff_GilchristCeleron_900MHz266267--0.245--
2009-11-28T21:09:00David LOffice267268--0.490--
2009-12-01T14:26:002knarfChipzilla268269--0.979--
2011-10-31T21:26:00Roy OswaldManual testing269270--1.959--
2013-01-29T01:01:00ktonyManual testing270273--27.42--
2013-06-28T22:52:00kdgehmanManual testing273274--31.34--


ECM factoring results:
No ECM results for M61040929


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2014-04-02T08:49:00_DJ3D_E5F17A65D9FBAF8C143.4
2022-02-26T03:16:18CarsonAlanE5F17A65D9FBAF8C143.4


PRP results:
No PRP results for M61040929


P-1 factor-bounds graph:
B1 = 575000, B2 = 10925000 (P-1 stage 2)
B1 = 575000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-02-26T03:16:18+00:00