is 2 59438963 - 1
has 17892911 decimal digits
takes 132.045 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
Actual27332.181764.3836 %----32.181764.3836 %
Target27332.181764.3836 %4000007000000013.50334.1481 %45.685065.8610 %
Difference----400000-70000000-13.5033-4.1481 %-13.5033-1.4774 %

Known prime factors (1 factor, 83.4 bits, 0.00014027% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
59438963125450236861918963276310812683.375105528621740859580
22 × 5 × 263 × 941 × 3847 × 5542079
2012-12-163847554207935,3820.98441.8166

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-12-16TheJudgerManual testing2683.3752.9320.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.02000e-5
2000-03-08ANONYMOUSv4_computers212544.04000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2022-06-27LordJuliusManual testing21263
2008-04-07monstguinness2632640.032
2008-11-12Sturle Sundeklughardt.ifi2642650.063
2008-11-14Sturle Sundeklughardt.ifi2652660.126
2008-11-15Sturle Sundeklughardt.ifi2662670.251
2008-11-16precius1BYU-S022672680.503
2009-06-13Sturle Sundechuchunge.ifi2682691.006
2011-07-23XyzzyManual testing2692702.012
2012-05-16Kyle AskineManual testing2702714.023
2012-07-17XyzzyManual testing2712728.046
2012-10-20Tom DuellManual testing27227316.09


ECM factoring results:
No ECM results for M59438963


Lucas-Lehmer results:
No L-L results for M59438963


PRP results:
No PRP results for M59438963


CERT results:
No CERT results for M59438963


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
263
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