is 2 2398103 - 1
has 721901 decimal digits
takes 0.162 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LBE67D0210AF8DFA9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26712.390667.1642 %2000000600000000.50557.6146 %12.896069.6645 %
Target2630.665565.0794 %100007000000.00471.2746 %0.670265.5245 %
Difference+4+11.7251+2.0848 %+1990000+59300000+0.5008+6.3400%+12.2258+4.1400 %

Known prime factors (2 factors, 135.2 bits, 0.00563664% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
239810321671684887030682811960.911451850585380
22 × 5 × 467 × 1667 × 29021
2003-09-211667290210.06460.00030.0003
2398103226496556314403893619832374.2624722410928855097
227 × 353 × 691 × 3413 × 24989
2018-06-253413249892,478.40.00040.0007

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-21ANONYMOUSv4_computers1960.911-0.000%
2018-06-25alpertronlaptop22000000600000001222374.2620.50510.524%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-01ANONYMOUSv4_computers212590.016


ECM factoring results:
Total ECM effort:22.572 GHz-days
Estimated T-Level:21.397
DigitsB1CompleteFacMiss
20110002.9075.464%
25500000.27975.619%
302500000.01898.213%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.267
50000707097870.731
50000450334505021.57


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-26ANONYMOUSv4_computersBE67D0210AF8DFA90.162


PRP results:
dateuseridcompidcofactorsres64
2017-10-12Oliver KruseGTX-0
2167168488703068281
F850215D323F8D75
2017-11-26kkmrkkblmbrbkc4.xlarge
2167168488703068281
F850215D323F8D75
2018-06-25ATHec2-PRPCF
2167168488703068281
22649655631440389361983
F850215D323F8D75
2018-06-25francijezekstacF
2167168488703068281
22649655631440389361983
F850215D323F8D75
2018-06-25francijezekmacos
2167168488703068281
22649655631440389361983
F850215D323F8D75


CERT results:
No CERT results for M2398103


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
TF factor-bounds graph:
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=21.4 ~= 54-bit
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00