is 2 6993607 - 1
has 2105286 decimal digits
takes 1.525 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LCA2C0098D1190F27double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2674.248765.6716%----4.248765.6716%
Target2674.248765.6716%450009000000.02902.2402%4.277766.4407%
Difference----45000-900000-0.0290-2.2402%-0.0290-0.7690%

Known prime factors (3 factors, 213.9 bits, 0.00305905% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6993607106854215773952546332063.212763942095788
22 × 71 × 83 × 32408879
2017-01-0483324088790.50580.55831.0427
6993607116631245483845272172063.339833841860744
23 × 743 × 140282951
2017-01-307431402829510.29652.41684.5135
69936072023339624266577103101161372787.38714465637147373144524
22 × 32 × 11 × 47 × 449 × 1093 × 1123 × 1410257
2009-07-03112314102577,938,9340.02460.0454

4 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-03Roman MaznichenkoWorkShop2787.387-3.050-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-09-20ANONYMOUSv4_computers21262--0.088--
2005-09-22ANONYMOUSv4_computers21263--0.228--
2017-01-04TJAOIManual testing263264*63.212200.2786.8191.241
2017-01-30TJAOIManual testing263264*63.339200.0686.8190.305


ECM factoring results:
No ECM results for M6993607


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-13ANONYMOUSv4_computersD98511B54CD549__1.525
1999-07-27ANONYMOUSv4_computersCA2C0098D1190F271.525
2001-11-03ANONYMOUSv4_computersCA2C0098D1190F271.525


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-01kkmrkkblmbrbkc4.xlarge
10685421577395254633
11663124548384527217
202333962426657710310116137
70D37CE283B827__no
2019-02-22RuzovejMasa_notebook
10685421577395254633
11663124548384527217
202333962426657710310116137
70D37CE283B827F2no


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
264
263
262
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
280
290
Last modified: 2023-04-26T21:34:10+00:00