is 2 20563793 - 1
has 6190319 decimal digits
takes 14.573 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2671.445062.6866%----1.445062.6866%0.0000%
PrimeNet2650.354861.5385%9000032000000.26665.0159%0.621463.4677%1.9292%
GPU722695.805763.7681%15000045000000.39773.7730%6.203465.1351%1.3670%
Difference-2-4.3607-1.0815%-150000-4500000-0.3977-3.7730%-4.7584-2.4486%-2.4486%

Known prime factors (4 factors, 176.2 bits, 0.00085672% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2056379374029654811032.785180
22 × 32 × 5		-992.891e-119.248e-61.882e-5
2056379385134103031032.987207
32 × 23		2008-09-089232.907e-111.003e-51.882e-5
20563793175824000024464811753.965427508680
23 × 5 × 1171 × 9127		2014-10-23117191277.856e-50.00160.0024
20563793974749025320597191756.4362370061363
1229 × 1928447		2015-08-06122919284470.00060.10920.2016

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
20563793630244825986987507432065.773
205637931301619002912456143929223612786.750
205637931496861853322950965514937432786.952
205637937216033387086775955875598392789.221
205637938298438395003579995458848572789.423
20563793171384272651815730036713599339883934110.401
20563793110812166299754911427627031841648538337119.738
20563793614330529844165455778039927197162121737122.208
205637931268751854427684181434605638596424898247655944143.186
205637931459064632566129167752024124880381593083821744143.388
2056379310801405109435002678655492964368698187707320384658
7377		54176.173
P-1 results:
No P-1 results for M20563793


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T16:36:00Will EdgingtonManual testing??32.987101.24666e-1230.082.57299e-12
2014-10-23T11:44:00TJAOIManual testing253254*53.965172.02082e-530.084.17077e-5
2015-04-03T10:07:00TJAOIManual testing256257*56.436170.00030.080.000
2022-06-24T03:14:33LordJuliusManual testing2126053.965177.85595e-530.080.000
2022-06-24T03:14:33LordJuliusManual testing2126032.785102.89081e-1130.085.96636e-11
2022-06-24T03:14:33LordJuliusManual testing2126032.987102.90707e-1130.085.99992e-11
2022-06-24T03:14:33LordJuliusManual testing2126056.436170.00130.080.001


ECM factoring results:
No ECM results for M20563793


Lucas-Lehmer results:
No L-L results for M20563793


PRP results:
No PRP results for M20563793


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
TF factor-bounds graph:
267
260
257
254
2
230
240
250
260
270
280
290
2100
Last modified: 2022-06-24T03:14:33+00:00