is 2 8989399 - 1
has 2706079 decimal digits
takes 2.485 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB850B87FEE0FA983double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2673.305464.1791 %45000450000.01800.7459 %3.323564.4463 %
Target2686.630664.7059 %6000065000000.16472.3994 %6.795265.5527 %
Difference-1-3.3251-0.5268 %-15000-6455000-0.1466-1.6535 %-3.4718-1.1064 %

Known prime factors (1 factor, 79.4 bits, 0.00088354% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
89893998113260946409637710846472479.42545126826311801477
3 × 432 × 149 × 11699 × 4667041
2012-08-0311699466704123,8700.10630.1903

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-02-16ANONYMOUSv4_computers4500045000--0.0180.640%
2012-08-03James Heinrichi7-9202479.4250.1440.000%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-11-14ANONYMOUSv4_computers212550.001
1998-11-28ANONYMOUSv4_computers212610.017
1999-03-15ANONYMOUSv4_computers212630.109
1999-12-01ANONYMOUSv4_computers212640.218


ECM factoring results:
No ECM results for M8989399


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-23ANONYMOUSv4_computersB850B87FEE0FA9832.485
2003-06-17ANONYMOUSv4_computersB850B87FEE0FA9832.485


PRP results:
dateuseridcompidcofactorsres64
2019-05-15Daniil Tsarkovtsar1
811326094640963771084647
84748F2C70FBFBC3
2020-10-03kutensspica
811326094640963771084647
84748F2C70FBFBC3


CERT results:
dateuseridcompid
2020-10-03Ben Deloi-04dd467313faac85e


P-1 factor-bounds graph:
B1 = 45000 (P-1 stage 1)
103
104
105
103
104
105
106
107
TF factor-bounds graph:
264
263
261
255
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