is 2 85018553 - 1
has 25593135 decimal digits
takes 273.831 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
Actual276180.007764.4737 %6800006800003.17571.4200 %183.183464.9781 %
Target27590.002864.0000 %5500009500000026.60103.9442 %116.603865.4199 %
Difference+1+90.0049+0.4737 %+130000-94320000-23.4253-2.5243 %+66.5796-0.4418 %

Known prime factors (1 factor, 76.1 bits, 0.00008953% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
85018553821835525638978719829112376.121483327166035735
32 × 5 × 73 × 56569 × 553549
2018-05-0256569553549306.830.39060.5377

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-05-02Architects Cubeda3_sc68000068000012376.1213.0771.595%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-24Architects Cubedm1_672642650.044
2012-10-06krackerManual testing2652660.088
2013-01-19E.Lechner2662670.176
2013-06-15SMoffatManual testing2672680.352
2013-06-16SMoffatManual testing2682690.703
2013-06-19SMoffatManual testing2692701.406
2013-07-22SMoffatManual testing2702712.813
2017-03-04ANONYMOUSManual testing27127439.38
2017-07-21The MawnManual testing27427545.00
2017-07-22Mark RoseManual testing27527690.00


ECM factoring results:
No ECM results for M85018553


Lucas-Lehmer results:
No L-L results for M85018553


PRP results:
No PRP results for M85018553


CERT results:
No CERT results for M85018553


P-1 factor-bounds graph:
B1 = 680000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
276
275
274
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00