is 2 64940453 - 1
has 19549025 decimal digits
takes 157.526 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
Actual2703.679562.8571 %----3.679562.8571 %
Target27458.913464.8649 %4500007000000014.91063.8613 %73.824166.2215 %
Difference-4-55.2339-2.0077 %-450000-70000000-14.9106-3.8613 %-70.1445-3.3644 %

Known prime factors (1 factor, 70.0 bits, 0.00010779% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6494045311823531625203911835372270.0029103363988856
23 × 3 × 29 × 13079545961
2012-06-0529130795459616.67322,506.44,681.3

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-06-05sikafarmi_rendering_farmManual testing2270.0022.9320.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-10-08Gordon Spencev4_computers212590.001
2004-02-14AxelFoxv4_computers212600.001
2022-03-30LordJuliusManual testing260263
2009-03-14Sturle Sundeginy.ifi2632640.030
2009-03-28ANONYMOUS2642650.058
2009-03-30biszczukstacja412652660.115
2009-04-04biszczukstacja412662670.230
2009-04-09aEricaEric_q12672680.460
2010-05-25GrunwalderGIMPcompute-0-02682690.921
2012-03-28GrunwalderGIMPLyc-i72692701.841


ECM factoring results:
No ECM results for M64940453


Lucas-Lehmer results:
No L-L results for M64940453


PRP results:
No PRP results for M64940453


CERT results:
No CERT results for M64940453


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
270
269
268
267
266
265
264
263
260
259
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00