factordbrpc · fdb
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Conway climb · Base 27 of 1603 length 16 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
0 Fully factored 4 1603 7×229
1 Fully factored 4 5332 22×31×43
2 Fully factored 8 29783338 2×13×661×1733
3 Fully factored 9 974388965 5×11×503×35221
4 Fully factored 11 56830741438<11> 2×71×400216489
5 Fully factored 14 1599428026…76<14> 22×3313×1206933313<10>
6 Fully factored 17 1156455975…96<17> 22×37×107×7459×97904579
7 Fully factored 21 2271495926…42<21> 2×1135747963…71<21>
8 Fully factored 22 6022200209…57<22> 23×147387811×1776502343…69<13>
9 Fully factored 23 6907311237…15<23> 5×1381462247…43<23>
10 Fully factored 24 4126468378…48<24> 27×977×354647×451159×20622821
11 Fully factored 27 1314823071…35<27> 5×29×3847×2357095221…69<21>
12 Fully factored 30 2136534992…96<30> 22×72×61×1554781×1149356824…11<20>
13 Fully factored 35 4694427657…88<35> 22×11×191×827×42767×1579364277…83<24>
14 Fully factored 41 2501684244…39<41> 19×29×5437×8350674613…97<34>
15 Composite 43 6154882152…54<43> 2×8101×1569479×2420447153…13<33>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (33 digits) of term #15:
242044715329210739581960743191413
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 '1603' --type 112 --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":"1603"},"type":112,"part":"last20","fr":0}}'