is 2 8906663 - 1
has 2681173 decimal digits
takes 2.326 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.336164.1791%----3.336164.1791%0.0000%
PrimeNet2640.399662.5000%3600010000000.03353.3212%0.433163.7455%1.2455%
GPU722686.692264.7059%5500012000000.04442.3057%6.736665.5197%0.8138%
Difference-1-3.3560-0.5268%-55000-1200000-0.0444-2.3057%-3.4005-1.3406%-1.3406%

Known prime factors (3 factors, 146.2 bits, 0.00164136% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
890666316566393191030.62693
3 × 31
-3311.638e-111.713e-62.312e-6
8906663844529785671136.2974741
11 × 431
2008-09-08114311.055e-91.283e-51.677e-5
89066637273943856834869383542072479.26740834282473889881
3 × 34651 × 228737 × 1717321
2021-07-29228737171732123,9850.11730.1763

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
89066631399081249007564758732166.923
8906663120503013974311515110050846526503334109.893
89066636143062246388365405065229402528136935115.565
890666310176838456431431874170420787982989592354771145146.190
P-1 results:
Exponent "8906663" not found


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-07-29T04:15:33ATHec2-P_12500002500000027P-12479.2670.644


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T04:41:00Will EdgingtonManual testing??36.297112.69198e-115.1255.93222e-11


ECM factoring results:
Exponent "8906663" not found


Lucas-Lehmer results:
Exponent "8906663" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2019-03-28T20:36:30ATHec2-PRPCF
1656639319
84452978567
4D8DC27248D8349Bno
2020-09-22T04:22:19kutenssol
1656639319
84452978567
4D8DC27248D8349Bno
2021-07-29T11:43:28ATHec2-PRPCF
1656639319
84452978567
727394385683486938354207
4D8DC27248D8349Bno


P-1 factor-bounds graph:
B1 = 250000, B2 = 25000000 (P-1 stage 2)
B1 = 250000 (P-1 stage 1)
100
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102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
2
230
240
250
260
270
280
290
2100
Last modified: 2021-07-29T11:43:28+00:00