is 2 41021797 - 1
has 12348792 decimal digits
takes 60.464 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
Actual2681.453061.7647 %----1.453061.7647 %
Target27223.312863.8889 %280000450000005.80573.8181 %29.118665.2677 %
Difference-4-21.8598-2.1242 %-280000-45000000-5.8057-3.8181 %-27.6656-3.5030 %

Known prime factors (1 factor, 77.1 bits, 0.00018790% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
410217971597797992436182410183132477.0801947498780265748
22 × 2819 × 90527 × 1907849
2010-09-24905271907849786.200.40510.4149

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-09-24TeamResslerTUB10623192477.0802.8800.000%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2007-02-20Team Prime Ribv4_computers212680.729


ECM factoring results:
No ECM results for M41021797


Lucas-Lehmer results:
No L-L results for M41021797


PRP results:
No PRP results for M41021797


CERT results:
No CERT results for M41021797


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
268
this exponent TF target: 72
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00