is 2 145680061 - 1
has 43854069 decimal digits
takes 835.384 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
Actual27552.525462.6667 %1355000135500011.26662.2748 %63.792063.5159 %
Target277210.105463.6364 %90000017000000084.08834.1328 %294.193765.1392 %
Difference-2-157.5799-0.9697 %+455000-168645000-72.8217-1.8580 %-230.4016-1.6233 %

Known prime factors (1 factor, 79.7 bits, 0.00005471% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1456800619807511876226673940767292479.6983366113320142924
22 × 13 × 199 × 367 × 1381 × 641819
2019-06-201381641819840.430.30160.5430

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-04-17MadPooManual testing100000100000--0.8460.486%
2019-06-20James Heinrich3930K1355000135500012479.69811.271.836%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-20Torchwood InstituteHTPC-V642632640.013
2010-12-27Mr-PlonkLinux-i72642650.026
2012-12-25Charles A. Morrischandra2652660.051
2015-03-20aurashiftusslcburnin342662670.103
2016-03-26DerekManual testing2672680.205
2017-05-20proxy2222Manual testing2682690.410
2017-06-06proxy2222Manual testing2692700.821
2017-09-22proxy2222Manual testing2702711.641
2017-10-16treborManual testing2702711.641
2017-10-17hktManual testing2712723.283
2017-10-17hktManual testing2722736.566
2017-10-17hktManual testing27327413.13
2017-10-17hktManual testing27427526.26


ECM factoring results:
No ECM results for M145680061


Lucas-Lehmer results:
No L-L results for M145680061


PRP results:
No PRP results for M145680061


CERT results:
No CERT results for M145680061


P-1 factor-bounds graph:
B1 = 1355000 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
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103
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105
106
107
102
103
104
105
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107
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 77
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00