is 2 61154111 - 1
has 18409222 decimal digits
takes 143.656 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
Actual27331.279164.3836 %----31.279164.3836 %
Target27462.561164.8649 %4000006500000013.35073.7153 %75.911866.1702 %
Difference-1-31.2820-0.4813 %-400000-65000000-13.3507-3.7153 %-44.6327-1.7867 %

Known prime factors (1 factor, 94.2 bits, 0.00015400% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
61154111223939665026072544175354607932994.177183094530657205158436
22 × 173 × 653 × 3631 × 34981 × 3190051
2013-04-1934981319005175,202,1190.70471.1057

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-04-19garochanakya2994.1773.4450.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-06-09Gordon Spencev4_computers212590.001
2003-10-14Gordon Spencev4_computers212600.001
2004-04-09ANONYMOUSv4_computers212620.005
2022-03-29LordJuliusManual testing262263
2009-06-15markroldgamer2632640.032
2009-07-22xiaowuc1core2642650.061
2009-07-29Frank BalzerBerlinOrgano2652660.122
2009-08-13ANONYMOUS2662670.244
2009-08-16korvadualcore12672680.489
2009-08-20korvadualcore12682690.978
2012-05-03Craig MeyersManual testing26927329.33


ECM factoring results:
No ECM results for M61154111


Lucas-Lehmer results:
No L-L results for M61154111


PRP results:
No PRP results for M61154111


CERT results:
No CERT results for M61154111


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
273
269
268
267
266
265
264
263
262
260
259
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
290
2100
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00