is 2 58968289 - 1
has 17751224 decimal digits
takes 131.000 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
Actual27332.438564.3836 %----32.438564.3836 %
Target27332.438564.3836 %4000007000000013.50334.1440 %45.941965.8595 %
Difference----400000-70000000-13.5033-4.1440 %-13.5033-1.4760 %

Known prime factors (1 factor, 82.4 bits, 0.00013977% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5896828964604000301701320064179672582.41854778594900134647
23 × 47 × 587 × 10831 × 7970371
2012-11-1810831797037131,0161.43182.6126

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-11-18TheJudgerManual testing2582.4182.9320.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.03000e-5
2000-02-09ANONYMOUSv4_computers212544.07000e-5
2000-06-23ANONYMOUSv4_computers212560.000
2001-08-24ANONYMOUSv4_computers212570.000
2002-11-02ANONYMOUSv4_computers212580.001
2003-07-30ANONYMOUSv4_computers212590.001
2004-01-271997rj7v4_computers212600.001
2022-06-27LordJuliusManual testing260263
2009-01-23cnaTb_xo4yManual testing2632640.033
2009-03-30Kalibzyk2642650.063
2009-04-04borgygAthleticDep22652660.127
2009-04-08borgygAthleticDep22662670.253
2009-04-10cawgodcawgod12672680.507
2009-10-12SAHS Science DeptChem_042682691.014
2011-05-19cnaTb_xo4ySamsung2692702.028
2012-04-28GregManual testing27027212.17
2012-10-17bcp19Manual testing27227316.22


ECM factoring results:
No ECM results for M58968289


Lucas-Lehmer results:
No L-L results for M58968289


PRP results:
No PRP results for M58968289


CERT results:
No CERT results for M58968289


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
273
272
270
269
268
267
266
265
264
263
260
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00