is 2 81004901 - 1
has 24384905 decimal digits
takes 252.775 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
Actual27594.462364.0000 %715000144787506.62823.8444 %101.090565.3840 %
Target27594.462364.0000 %5500009000000024.53973.8807 %119.001965.3971 %
Difference---+165000-75521250-17.9115-0.0363 %-17.9115-0.0131 %

Known prime factors (1 factor, 84.0 bits, 0.00010364% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
81004901186988822198930043433521832683.951115418215373740191
33 × 11 × 761 × 37441 × 13639103
2017-05-15374411363910342,6663.52256.2798

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-05-15HardyP Germanyws-Xeon5675_3GHz7150001447875022683.9516.6283.844%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-28Architects Cubedm1_652642650.046
2011-02-05UngelovendeManual testing2652660.092
2013-04-30c10ck3rManual testing2662670.185
2013-06-09qwertyuio999PC52672680.369
2013-08-09ANONYMOUS2682690.738
2013-10-11ANONYMOUSManual testing2692701.476
2014-03-01SMoffatManual testing2702712.952
2016-09-16ANONYMOUSManual testing27127588.56


ECM factoring results:
No ECM results for M81004901


Lucas-Lehmer results:
No L-L results for M81004901


PRP results:
No PRP results for M81004901


CERT results:
No CERT results for M81004901


P-1 factor-bounds graph:
B1 = 715000, B2 = 14478750 (P-1 stage 2)
B1 = 715000 (P-1 stage 1)
103
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105
106
103
104
105
106
107
108
TF factor-bounds graph:
275
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00