is 2 3660637 - 1
has 1101962 decimal digits
takes 0.384 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LC7B37A924239E026double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27065.275768.5714 %300000006000000009.298110.3771 %74.573871.8328 %
Target2640.972365.6250 %2200020000000.01982.0373 %0.992166.3253 %
Difference+6+64.3034+2.9464 %+29978000+598000000+9.2783+8.3398%+73.5817+5.5075 %

Known prime factors (1 factor, 75.6 bits, 0.00206442% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3660637561216890883127487842072375.5717665563273320019
7665563273320019
2022-02-09176655632733200194,071.663,602,669118,792,074

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-10Carsten Kossendeymother20000250000--0.0051.743%
2012-02-03Squeeky_SquirrelP4_26009000016425006--0.0273.826%
2016-06-18JossManual testing10800032850006--0.0434.562%
2016-12-29JossManual testing129600129600---1.749%
2017-01-29JossManual testing167520167520---1.974%
2017-03-07JossManual testing24122824122806--0.0554.728%
2020-09-26axnManual testing3000000060000000012--9.29815.259%
2022-04-06JossManual testing1000000147585900--1.62510.895%
2022-09-09JossManual testing1000000212677920--2.39311.399%


Trial Factoring results:
5758596061626364656667686970
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-11-28ANONYMOUSv4_computers212600.021
2009-03-09S485122USB-Z2602610.042
2011-06-13Grant McCrackenthumper2612620.084
2012-06-05GrunwalderGIMPManual testing212630.436
2016-02-23Mark RoseManual testing2622630.268
2015-01-23VictordeHollanderManual testing2632651.557
2015-10-18ramgeisManual testing2652662.041
2016-12-30Gordon SpenceManual testing2662674.083
2019-01-07TJAOIManual testing2672688.166
2020-11-10axnManual testing26826916.33
2021-02-21axnManual testing26927032.66


ECM factoring results:
Total ECM effort:5.430 GHz-days
Estimated T-Level:20.654
DigitsB1CompleteFacMiss
20110001.40624.508%
25500000.13187.737%
302500000.00899.177%


ECM Summary

B1B2factorcurvesGHz-days
500005000000192.679
50000500000030.446
50000602119271.139
50000630000071.166


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-02ANONYMOUSv4_computersC7B37A924239E0260.384
1999-09-07dtlgcv4_computersC7B37A924239E0260.384


PRP results:
dateuseridcompidcofactorsres64
2022-02-10Tucker KaoDozenal_Behemoth_Lab
56121689088312748784207
E8EBBAB7C348A4BB


CERT results:
dateuseridcompid
2022-02-10curtiscjckl343001l


P-1 factor-bounds graph:
B1 = 30000000, B2 = 600000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
B1 = 1000000, B2 = 212677920 (P-1 stage 2)
B1 = 1000000, B2 = 147585900 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 241228, B2 = 2412280 (P-1 stage 2)
B1 = 108000, B2 = 3285000 (P-1 stage 2)
B1 = 241228 (P-1 stage 1)
B1 = 90000, B2 = 1642500 (P-1 stage 2)
B1 = 167520 (P-1 stage 1)
B1 = 129600 (P-1 stage 1)
B1 = 108000 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
B1 = 20000, B2 = 250000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=20.65 ~= 52-bit
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Last modified: 2024-03-13T02:15:48+00:00