factordbrpc · fdb
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Conway climb · Base 11 of 7989 length 20 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 7989 3×2663
1 Fully factored 5 46586 2×23293
2 Fully factored 6 345395 5×37×1867
3 Fully factored 7 9401389 809×11621
4 Fully factored 8 11856190 2×5×19×62401
5 Fully factored 9 529275987 32×109×211×2557
6 Fully factored 11 84655362632<11> 23×10581920329<11>
7 Fully factored 12 659017535354<12> 2×178621×1844737
8 Fully factored 14 7252624410…90<14> 2×5×101×8443×8505053
9 Fully factored 15 9610942453…54<15> 2×15883073×30255299
10 Fully factored 17 1175917412…14<17> 2×31×67×431×6567998711<10>
11 Fully factored 19 1142712957…42<19> 2×3×1904521595…07<18>
12 Fully factored 20 1282662787…82<20> 2×197×3255489307…03<17>
13 Fully factored 21 1314028325…02<21> 2×3863×15137×1123596072…71<13>
14 Fully factored 23 1675308926…43<23> 34×181×2543111×449330596733<12>
15 Fully factored 25 3022979504…12<25> 24×1889362190…07<24>
16 Fully factored 26 2347012254…13<26> 45263×5185277719…51<21>
17 Fully factored 26 3045120154…14<26> 2×3×31×3823×245887553×174160894471<12>
18 Fully factored 29 3010335505…73<29> 7×23×83×191697533×1175152986…87<17>
19 Composite 31 1037707695…73<31> 53×97×2018493863…53<27>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (27 digits) of term #19:
201849386314769085080893153
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 '7989' --type 96 --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":"7989"},"type":96,"part":"last20","fr":0}}'