is 2 3623449 - 1
has 1090767 decimal digits
takes 0.381 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L2B277595D4AF63EAdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26816.449867.6471 %6000003893046303.31658.3789 %19.766370.3579 %
Target2640.982365.6250 %2200020000000.01982.0335 %1.002166.3240 %
Difference+4+15.4675+2.0221 %+578000+387304630+3.2968+6.3454%+18.7642+4.0339 %

Known prime factors (1 factor, 100.2 bits, 0.00276398% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3623449140788865521323834618780073292931100.151194274661408679733892736
27 × 112 × 1013 × 8737 × 87011 × 16288267
2020-06-2687011162882674.117e+100.14770.2524

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-06Carsten Kossendeymother20000245000--0.0051.730%
2012-01-16Squeeky_SquirrelP4_26009000016200006--0.0263.809%
2015-11-03Squeeky_SquirrelP4_260017500047687506--0.0655.251%
2017-05-30JossManual testing35000035000006--0.0795.316%
2020-06-26axnManual testing3000000030000000131100.1514.5699.463%
2022-05-24JossManual testing100000130364850
skipped known factor: 1407888655213238346187800732929
--1.3028.084%
2022-09-02USAFSS6917th_Scty_Sq600000389304630
skipped known factor: 1407888655213238346187800732929
--3.93811.650%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-02-08ANONYMOUSv4_computers212600.021
2009-03-12S485122USB-Z2602610.042
2011-05-29markrManual testing212620.085
2012-06-20GrunwalderGIMPManual testing212630.440
2016-02-23Mark RoseManual testing2622630.271
2015-01-20VictordeHollanderManual testing2632651.573
2015-10-18ramgeisManual testing2652662.062
2016-12-23Gordon SpenceManual testing2662674.125
2018-10-22TJAOIManual testing2672688.249


ECM factoring results:
Total ECM effort:1.635 GHz-days
Estimated T-Level:2.308
DigitsB1CompleteFacMiss
20110000.46263.031%
25500000.04395.819%
302500000.00399.731%


ECM Summary

B1B2factorcurvesGHz-days
500005000000121.635


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-02-08ANONYMOUSv4_computers2B277595D4AF63EA0.381
1999-09-14ANONYMOUSv4_computers2B277595D4AF63EA0.381


PRP results:
dateuseridcompidcofactorsres64
2020-06-26Christoph ZengerManual testing
1407888655213238346187800732929
58EE7101D2950E85
2020-06-28fre_gamesgpu
1407888655213238346187800732929
58EE7101D2950E85


CERT results:
No CERT results for M3623449


P-1 factor-bounds graph:
B1 = 30000000 (P-1 stage 1)
B1 = 600000, B2 = 389304630 (P-1 stage 2)
B1 = 100000, B2 = 130364850 (P-1 stage 2)
B1 = 600000 (P-1 stage 1)
B1 = 350000, B2 = 3500000 (P-1 stage 2)
B1 = 175000, B2 = 4768750 (P-1 stage 2)
B1 = 350000 (P-1 stage 1)
B1 = 175000 (P-1 stage 1)
B1 = 90000, B2 = 1620000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
B1 = 20000, B2 = 245000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
103
104
105
106
107
108
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
263
262
261
260
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=2.31 ~= -9-bit
250
260
270
280
290
2100
2110
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00