is 2 58142933 - 1
has 17502767 decimal digits
takes 123.231 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LC8A52AC5E60821CFdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27465.801064.8649%545000110362503.43153.7244%69.232566.1734%
Target27332.899064.3836%40000010400000018.57574.0786%51.474765.8362%
Difference+1+32.9020+0.4813%+145000-92963750-15.1442-0.3542%+17.7579+0.3372%

Known prime factors (1 factor, 66.2 bits, 0.00011392% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
58142933867695656056506458072066.234746174652091
11 × 67834059281		2019-06-1111678340592810.499411,35821,213

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-10-21TheJudgerManual testing54500011036250---3.432--3.724%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-08ANONYMOUSv4_computers21253--2.06375e-5--
1999-12-23ANONYMOUSv4_computers21253--2.06375e-5--
2000-02-09ANONYMOUSv4_computers21254--4.12749e-5--
2000-06-26ANONYMOUSv4_computers21256--0.000--
2000-06-28ANONYMOUSv4_computers21256--0.000--
2000-06-29ANONYMOUSv4_computers21256--0.000--
2001-07-17ANONYMOUSv4_computers21257--0.000--
2002-06-09ANONYMOUSv4_computers21258--0.001--
2003-07-30ANONYMOUSv4_computers21259--0.001--
2003-11-16ANONYMOUSv4_computers21261--0.005--
2016-02-23Mark RoseManual testing261263--0.022--
2008-10-31KYOJI_KAMEICarstimann263264--0.034--
2008-11-01Sturle Sundemaugrim.ifi264265--0.064--
2008-11-01KYOJI_KAMEIwlaptop265266--0.129--
2008-11-02KYOJI_KAMEIwlaptop266267--0.257--
2019-06-11TJAOIManual testing266267*66.234200.245282.20.562
2009-12-18MerckosC2Duo267268--0.514--
2011-05-02StoneGnomeArthur268269--1.028--
2011-06-22ptcrptcr-home269270--2.056--
2012-04-28XyzzyManual testing270271--4.113--
2012-04-28XyzzyManual testing271272--8.226--
2012-09-08bcp19Manual testing272273--16.45--
2018-12-18ChuckManual testing273274--32.90--


ECM factoring results:
No ECM results for M58142933


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2013-08-14Genetic MattywcC8A52AC5E60821CF123.2


PRP results:
No PRP results for M58142933


P-1 factor-bounds graph:
B1 = 545000, B2 = 11036250 (P-1 stage 2)
B1 = 545000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 73
TF double-checked to: 67.8
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Last modified: 2023-06-05T21:50:05+00:00