factordbrpc · fdb
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Conway climb · Base 16 of 5071 length 21 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
1 Fully factored 5 45517 23×1979
2 Fully factored 5 96187 72×13×151
3 Fully factored 6 470423 47×10009
4 Fully factored 7 3090201 3×1030067
5 Fully factored 7 4175795 5×13×17×3779
6 Fully factored 8 97590979 179×457×1193
7 Fully factored 10 3004994729<10> 11×1117×244567
8 Fully factored 11 48416144215<11> 5×53×79×2312689
9 Fully factored 13 5726519118…21<13> 3×151×239×52892563
10 Fully factored 14 6321740808…31<14> 7×3407×2650736219<10>
11 Fully factored 15 1377809066…03<15> 11×107×1993×58736123
12 Fully factored 16 3214407538…79<16> 1679033×1914439763<10>
13 Fully factored 16 7211393738…31<16> 1492343×4832262917<10>
14 Fully factored 18 1025530349…65<18> 5×1021×319289×62917117
15 Fully factored 19 6052079182…57<19> 3×61×479×15241×4530066061<10>
16 Fully factored 23 1529450910…85<23> 5×3058901821…37<22>
17 Fully factored 23 2667073423…17<23> 32×7×113×251×1492595944…93<17>
18 Fully factored 25 3813052335…09<25> 31×835687×1471863128…97<18>
19 Fully factored 26 3844018206…65<26> 5×11×19×43×8554619354…99<21>
20 Composite 29 2818630940…67<29> 397×7099826045…11<26>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (26 digits) of term #20:
70998260457268962306137911
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 '5071' --type 101 --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":"5071"},"type":101,"part":"last20","fr":0}}'