is 2 59615207 - 1
has 17945966 decimal digits
takes 132.437 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27332.086564.3836%565000115825003.75364.1786%35.840165.8718%
Target27332.086564.3836%40000011200000020.87444.1497%52.960965.8615%
Difference---+165000-100417500-17.1208+0.0289%-17.1208+0.0103%

Known prime factors (1 factor, 66.7 bits, 0.00011188% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
596152071196123934680173099272166.6971003203708309
32 × 11 × 29 × 157 × 2225647		2012-12-1515722256470.45010.39110.7295

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-12-15NesowaIceblock565000115825002166.6973.754264.97.5074.179%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-23ANONYMOUSv4_computers21253--2.01278e-5--
2000-03-08ANONYMOUSv4_computers21254--4.02556e-5--
2000-06-28ANONYMOUSv4_computers21256--0.000--
2000-06-29ANONYMOUSv4_computers21256--0.000--
2022-06-27LordJuliusManual testing21263--0.027--
2008-03-14monstguinness263264--0.033--
2009-01-17Sturle Sundegopher.ifi264265--0.063--
2009-01-19Jon Strayergrell265266--0.125--
2009-01-19Jon Strayergrell266267--0.251--
2009-01-20Sturle Sundemorovan.ifi267268--0.501--
2009-12-19Helmut Zulusprinted268269--1.003--
2011-10-27evatutinvtdc269270--2.006--
2011-11-26ANONYMOUSC8427F4B8270271--4.011--
2012-11-13Norman LeyManual testing271272--8.022--
2012-11-13Norman LeyManual testing272273--16.04--


ECM factoring results:
No ECM results for M59615207


Lucas-Lehmer results:
No L-L results for M59615207


PRP results:
No PRP results for M59615207


P-1 factor-bounds graph:
B1 = 565000, B2 = 11582500 (P-1 stage 2)
B1 = 565000 (P-1 stage 1)
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108
TF factor-bounds graph:
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256
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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