is 2 11780897 - 1
has 3546404 decimal digits
takes 4.536 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L1FA3E468A28BAE1Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.522264.1791 %12000024900000.13913.7011 %2.661365.5049 %
Target2685.059564.7059 %80000100000000.34642.9329 %5.405865.7410 %
Difference-1-2.5372-0.5268 %+40000-7510000-0.2073+0.7681%-2.7445-0.2362 %

Known prime factors (1 factor, 75.7 bits, 0.00064260% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11780897615665055466530345898332375.7052612980384543428
22 × 3 × 23 × 929 × 9839 × 1035763
2016-05-15983910357631,035.90.03670.0588

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-12-21ANONYMOUSv4_computers175000175000--0.0981.465%
2016-05-15NumberwangManual testing1200002490000622375.7050.1393.311%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-02-01Ken Warnerv4_computers212640.167
2013-10-25lycornManual testing2642650.317
2013-11-26NesowaManual testing2652660.634
2016-02-08VictordeHollanderManual testing2662671.269


ECM factoring results:
No ECM results for M11780897


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-10-13binarydigitsv4_computers1FA3E468A28BAE1E4.536
2004-07-26Team Prime Ribv4_computers1FA3E468A28BAE1E4.536


PRP results:
dateuseridcompidcofactorsres64
2021-11-06GANLMS-11
61566505546653034589833
678B9116FA93AEC7


CERT results:
dateuseridcompid
2021-11-06curtiscjckl2f11402l


P-1 factor-bounds graph:
B1 = 120000, B2 = 2490000 (P-1 stage 2)
B1 = 175000 (P-1 stage 1)
B1 = 120000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
TF factor-bounds graph:
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00