is 2 7908107 - 1
has 2380578 decimal digits
takes 1.810 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L6C435A05B9F496CCdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2673.757465.6716 %300001125000.01141.0978 %3.768866.0485 %
Target2673.757465.6716 %5500060000000.12572.5621 %3.883166.5512 %
Difference----25000-5887500-0.1143-1.4643 %-0.1143-0.5027 %

Known prime factors (1 factor, 67.7 bits, 0.00085554% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
79081072326769340774253948012167.65714711291468200
23 × 52 × 43 × 1061 × 1612267
2012-06-30106116122675.85180.02950.0544

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-05-25ANONYMOUSv4_computers30000112500--0.0111.098%
2012-06-30NesowaOutback2167.6570.0660.000%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-08-09ANONYMOUSv4_computers212620.039
1998-08-30ANONYMOUSv4_computers212630.124


ECM factoring results:
No ECM results for M7908107


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-09-22bugabagov4_computers6C435A05B9F496CC1.810
2002-06-29ANONYMOUSv4_computers6C435A05B9F496CC1.810


PRP results:
dateuseridcompidcofactorsres64
2018-06-05Oliver KruseGTX-5
232676934077425394801
90C902541E1C450B
2019-11-15oodairacom1
232676934077425394801
90C902541E1C450B


CERT results:
No CERT results for M7908107


P-1 factor-bounds graph:
B1 = 30000, B2 = 112500 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
102
103
104
105
102
103
104
105
106
107
TF factor-bounds graph:
263
262
this exponent TF target: 67
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00