is 2 65023537 - 1
has 19574036 decimal digits
takes 157.727 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
Actual27458.838264.8649 %----58.838264.8649 %
Target27458.838264.8649 %4500007000000014.91063.8619 %73.748866.2218 %
Difference----450000-70000000-14.9106-3.8619 %-14.9106-1.3569 %

Known prime factors (1 factor, 77.6 bits, 0.00011928% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
650235372228049196960368539587372477.5601713263611729064
23 × 89 × 491 × 25741 × 190387
2013-09-0625741190387487.430.12210.1843

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-09-06CSLatDDtmsm5-402477.5602.0400.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-10-31Gordon Spencev4_computers212590.001
2004-02-141997rj7v4_computers212600.001
2022-03-30LordJuliusManual testing260264
2009-03-20qubitsPIII_500MHz2642650.057
2009-03-22ANONYMOUS2652660.115
2009-03-30linded23A33132662670.230
2009-04-06linded23A33132672680.460
2010-02-14Penguin66coldcomputing2682690.919
2012-03-29nate.andersManual testing2692715.516
2013-07-27SWL551Manual testing27127322.07
2013-09-01ChuckManual testing27327429.42


ECM factoring results:
No ECM results for M65023537


Lucas-Lehmer results:
No L-L results for M65023537


PRP results:
No PRP results for M65023537


CERT results:
No CERT results for M65023537


P-1 factor-bounds graph:
103
104
105
103
104
105
106
TF factor-bounds graph:
274
273
271
269
268
267
266
265
264
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