factordbrpc · fdb
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Conway climb · Base 25 of 4899 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 4899 3×23×71
1 Fully factored 5 61321 13×53×89
2 Fully factored 7 5111339 17×300667
3 Fully factored 7 6941292 22×3×578441
4 Fully factored 11 12725187816<11> 23×3×11×48201469
5 Fully factored 13 8108202498…44<13> 23×132×1483×4043959
6 Fully factored 16 5104384603…34<16> 2×233×48623×225276413
7 Fully factored 18 1414417721…63<18> 541×877×1319×14843×15227
8 Fully factored 20 3224945863…27<20> 19×4937×155653×2208758353<10>
9 Fully factored 21 7195768319…78<21> 2×199×53239×1170067×29023747
10 Fully factored 25 1349613342…22<25> 2×32×79×271×4261×13297×61812352543<11>
11 Fully factored 29 1931224097…18<29> 2×3×3218706829…03<28>
12 Fully factored 30 4852508987…28<30> 22×112×13×317983×378697201×640444701373<12>
13 Fully factored 34 7452752597…23<34> 3×7×17×43×107×383×56857×11492771×1812962358…39<14>
14 Fully factored 40 4589815362…39<40> 32×5099794846…71<39>
15 Composite 42 1073689456…96<42> 22×33×9941569037…37<39>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (39 digits) of term #15:
994156903748703404348091482742343212037
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 '4899' --type 110 --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":"4899"},"type":110,"part":"last20","fr":0}}'