is 2 9961129 - 1
has 2998599 decimal digits
takes 2.905 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L4BD09D9D132C8274double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.983064.1791 %550007975000.04042.4018 %3.023465.0395 %
Target2685.983764.7059 %6500075000000.19882.5663 %6.182665.6116 %
Difference-1-3.0008-0.5268 %-10000-6702500-0.1584-0.1645 %-3.1592-0.5722 %

Known prime factors (1 factor, 64.1 bits, 0.00064304% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9961129191530404491045962732064.054961389037784
23 × 7 × 137 × 857 × 146221
2013-05-098571462210.47780.00370.0063

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-08-25ANONYMOUSv4_computers55000797500--0.0402.118%
2013-05-09NesowaOutback2064.0540.1030.000%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-11-24MadPoov4_computers212640.197


ECM factoring results:
No ECM results for M9961129


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-05-17ANONYMOUSv4_computers4BD09D9D132C82742.905
2003-09-14ANONYMOUSv4_computers4BD09D9D132C82742.905


PRP results:
dateuseridcompidcofactorsres64
2019-11-27ATHec2-PRPCF
19153040449104596273
E68387638DFAE3AA
2021-01-13kutensspica
19153040449104596273
E68387638DFAE3AA


CERT results:
dateuseridcompid
2021-01-13Ahasver Wandererhome_001


P-1 factor-bounds graph:
B1 = 55000, B2 = 797500 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
TF factor-bounds graph:
264
this exponent TF target: 68
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00