is 2 9925519 - 1
has 2987879 decimal digits
takes 2.895 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L235E3AEA7AF3CB5Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.993764.1791 %1350001350000.05711.4243 %3.050864.6893 %
Target2686.005264.7059 %6500075000000.19882.5648 %6.204065.6111 %
Difference-1-3.0115-0.5268 %+70000-7365000-0.1417-1.1405 %-3.1532-0.9218 %

Known prime factors (1 factor, 71.1 bits, 0.00071676% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
992551926050514198158956497832271.142131229985042389
3 × 37 × 167 × 2617 × 2705141
2012-10-032617270514157.0210.06340.1164

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-10-07ANONYMOUSv4_computers135000135000--0.0571.247%
2003-08-08ANONYMOUSv4_computers5000050000--0.0210.699%
2012-10-03NesowaOutback2271.1420.1170.000%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-07-27ANONYMOUSv4_computers212640.198


ECM factoring results:
No ECM results for M9925519


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-12-07ANONYMOUSv4_computers235E3AEA7AF3CB5E2.895
2003-12-13ANONYMOUSv4_computers235E3AEA7AF3CB5E2.895


PRP results:
dateuseridcompidcofactorsres64
2019-11-19mnd927016b
2605051419815895649783
C85E938ADFA30E3C
2021-01-10Oliver KruseThreadripper-PC
2605051419815895649783
C85E938ADFA30E3C


CERT results:
dateuseridcompid
2021-01-11curtiscwcm128--43l


P-1 factor-bounds graph:
B1 = 135000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
TF factor-bounds graph:
264
this exponent TF target: 68
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00