factordbrpc · fdb
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Distinct-prime home prime, descending · Base 2 of 34 length 54 Not fully computed yet - the last known term is composite. ↓ .elf file
Show sequence-development graph
Term size (digits) across the sequence
How the sequence develops - decimal digits of each term vs iteration.
nStatus DigitsTermFactorization
34 Fully factored 14 6558649666…50<14> 2×52×2663×492576017
35 Fully factored 14 6456292378…62<14> 2×3×41×111149×2361253
36 Fully factored 15 3169221267…30<15> 2×5×17×87277×21360127
37 Fully factored 16 2866907805…70<16> 2×5×23×1246481654…29<14>
38 Fully factored 17 1276397214…54<17> 2×32×55171×12852940193<11>
39 Fully factored 17 1347728461…18<17> 2×17×83×147739×32325871
40 Fully factored 18 1388385611…86<18> 2×181×269×3613×10973×35963
41 Fully factored 19 1265359139…46<19> 2×3×19×10349351×1072496389<10>
42 Fully factored 19 9212673836…18<19> 2×32×7×151×269×172859×10413433
43 Fully factored 20 4579876557…22<20> 2×3×7×1090446799…91<19>
44 Fully factored 21 1395771903…74<21> 2×11×13×53×137×6721279906…69<14>
45 Fully factored 22 1127643647…86<22> 2×112×32429479×143686689977<12>
46 Fully factored 21 3085648171…98<21> 2×32×1714248984…11<20>
47 Fully factored 21 2742798374…90<21> 2×5×3541×7745829920…79<16>
48 Fully factored 22 1015261419…22<22> 2×5479×9265024815…09<17>
49 Fully factored 22 3035963331…30<22> 2×5×17×30697×92251×6306386497<10>
50 Fully factored 23 2773578113…14<23> 2×3×233×1983961454…93<20>
51 Fully factored 23 8126306117…70<23> 2×5×193×2887×1458441740…17<17>
52 Fully factored 24 4893718420…46<24> 2×32×41×2819×1509377×155843901209<12>
53 Composite 25 1370817451…06<25> 2×3×2284695753…01<24>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (24 digits) of term #53:
228469575330748097320901
Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:
level 0 done · takes up to a minute
From the command linefdb · curl
fdb
fdb seq view '34' --type 130 --part last20
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"sequence_view","params":{"start":{"expr":"34"},"type":130,"part":"last20","fr":0}}'