20230123, 18:05  #23 
"Oliver"
Sep 2017
Porta Westfalica, DE
53F_{16} Posts 
Unfortunately, neither YAFU not GMPECM has interstage progress reporting. But beside lengthy P1 runs, this is barely needed.
And yes, this is a multiday effort, but this should not be a surprise if you recall how much ECM needs to be done, additionally. 
20230124, 20:48  #24  
Jan 2023
5^{2} Posts 
Quote:
Code:
ecm save fib1801_pm1_save.txt v v pm1 100000000000 1 < fib1801.txt GMPECM 7.0.5dev [configured with GMP 6.1.2, enableasmredc] [P1] Input number is 10895698772851801631427021406438425189751366510941542322578646382019072795121093722703724280239777032739227656218393712820414789732296637546673522102683861477159788715056432686413559864339148935849000824792389951156982879378723635424946395688038035557306484470174330998312225243154735081495240180520574310352932024140384561828278851568905987902116485927546851422937774936538801 (377 digits) Using mpz_mod Using lmax = 0 with NTT which takes about 0MB of memory Using B1=100000000000, B2=0, polynomial x^1, x0=2040217917 P = 26804968, l = 0, s_1 = 0, k = s_2 = 26835552, m_1 = 0 Probability of finding a factor of n digits: 20 25 30 35 40 45 50 55 60 65 0.44 0.22 0.097 0.038 0.014 0.0047 0.0015 0.00043 0.00012 3.2e005 Step 1 took 29346031ms x=3476101875119668249655013125702678614074694708895437040187302707998307173315990035521674753420946247679246460392779848021400648980141262275782863909080617104765079218569214211582648700472270372746112137228351594731971522947221794697182702894113879675867928478991281639828871499038166886049987070598022558971980425670508593185472689941598797936254142245943818623549400294596587 Assertion failed! Program: C:\Users\Tyler\Downloads\gmpecm\bin\x64\Release\ecm.exe File: pm1fs2.c, Line 2906 Expression: __ecm_eulerphi (params>P) == params>s_1 * params>s_2 Code:
ecm save fib1801_pm1_save.txt v v pm1 100000000000 < fib1801.txt 

20230125, 15:11  #25 
Jan 2023
5^{2} Posts 
This also ended up with a blank save file... not sure what's going wrong.
Code:
ecm save fib1801_pm1_save.txt v v pm1 100000000000 < fib1801.txt GMPECM 7.0.5dev [configured with GMP 6.1.2, enableasmredc] [P1] Input number is 10895698772851801631427021406438425189751366510941542322578646382019072795121093722703724280239777032739227656218393712820414789732296637546673522102683861477159788715056432686413559864339148935849000824792389951156982879378723635424946395688038035557306484470174330998312225243154735081495240180520574310352932024140384561828278851568905987902116485927546851422937774936538801 (377 digits) Using mpz_mod Using lmax = 536870912 with NTT which takes about 270336MB of memory Using B1=100000000000, B2=763398732806919196, polynomial x^1, x0=1256424407 P = 1052416365, l = 536870912, s_1 = 174182400, k = s_2 = 2, m_1 = 43 Probability of finding a factor of n digits: 20 25 30 35 40 45 50 55 60 65 0.93 0.69 0.44 0.24 0.11 0.048 0.019 0.0067 0.0022 0.00069 Step 1 took 15332203ms x=2754861385661253572259076173465636093153757340672185248395259220900974098736589460794950052473327331695189412367368412708155269758834665131906442605963871510051613816873830499145457764620951507928891627421820652314484426028396863521224365322036977681146333079000364809246157733919678105047342387535635298609354742231133049365828423178046769383282662475567551075530526077700577 Computing F from factored S_1 took 906750ms Computing h took 46031ms Computing DCTI of h 
20230125, 16:52  #26 
Sep 2009
2^{2}·607 Posts 
I can't help, I use ecm (on Linux) but don't know how it works internally.
Unless someone jumps in try contacting the authors. See the bottom of INSTALL.ecm. Also read the README and TODO files shipped with ecm. 
20230125, 17:25  #27 
Sep 2002
Database er0rr
2^{4}·281 Posts 

20230125, 17:35  #28 
"Oliver"
Sep 2017
Porta Westfalica, DE
17·79 Posts 
Extra verbosity for a higher chance to find a solution to the problem. It is more verbose than v.

20230125, 17:43  #29  
Sep 2002
Database er0rr
2^{4}·281 Posts 
Quote:
Code:
SYNOPSIS ecm [options] B1 [B2minB2max  B2] 

20230125, 19:28  #30  
Mar 2006
2·3·89 Posts 
Quote:
Code:
D:\gmpecm>ecm save fib1801_pm1_save.txt v v pm1 100000000000 1 < fib1801.txt GMPECM 7.0.6dev [configured with GMP 6.2.1, enableasmredc, enableassert] [P1] Tuned for x86_64/k8/params.h Input number is 1089569877285180163142702140643842518975136651094154232257864638 20190727951210937227037242802397770327392276562183937128204147897322966375466735 22102683861477159788715056432686413559864339148935849000824792389951156982879378 72363542494639568803803555730648447017433099831222524315473508149524018052057431 0352932024140384561828278851568905987902116485927546851422937774936538801 (377 d igits) Using mpz_mod Using lmax = 0 with NTT which takes about 0MB of memory Using B1=100000000000, B2=1, polynomial x^1, x0=3251100022 Probability of finding a factor of n digits (assuming one exists): 20 25 30 35 40 45 50 55 60 65 0.44 0.22 0.097 0.038 0.014 0.0047 0.0015 0.00043 0.00012 3.2e005 Step 1 took 78155752ms x=155285938052281359457010604164760948902045998468862655046272050222864510288367 43242882615269486560094962507466394677092255933360196986469400748148084615015554 96090494274540255724330009513518714527616151183564139320332413944210287498789974 11173029034186909735734503805155708578319533522132114475994965279117420756908270 1713686141971888040833787589641289747959136356878512566573 Peak memory usage: 10MB I'm not sure what the issue is with your gmpecm executable, but you may want to compile your own from the latest source, or download a different exe that someone else has compiled. P.S. Using B2 = 1 is fine, this is the recommended way to complete X amount of B1 work and save it for later. If you don't specify B2 then gmpecm assumes you want to do a full run of work and will choose its own B2 value. Last fiddled with by WraithX on 20230125 at 19:32 

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