factordbrpc · fdb
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Home prime · Base 31 of 31298 length 15 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 5 31298 2×15649
1 Fully factored 5 75231 32×13×643
2 Fully factored 7 2873072 24×79×2273
3 Fully factored 13 1762641924…30<13> 2×5×17×10368481909<11>
4 Fully factored 14 5762178243…43<14> 79×271×2691474727<10>
5 Fully factored 16 2096188760…17<16> 3×261347×2673570337<10>
6 Fully factored 17 8341577252…47<17> 3×73×3808939384…13<15>
7 Fully factored 19 2423202110…69<19> 151×18797×853737090727<12>
8 Fully factored 21 1194340667…25<21> 52×179×2668917693…43<17>
9 Fully factored 24 1212520479…22<24> 2×29×1004141×2081931273…99<16>
10 Fully factored 26 6622101777…41<26> 373×859×35267×2054989×2851778801<10>
11 Fully factored 30 2613718844…39<30> 587×36467×931529×1310763535…79<17>
12 Fully factored 33 3943675673…92<33> 22×499×797×1823×8951×1519232027…67<20>
13 Fully factored 37 1291261145…51<37> 3×11×572207×6838281536…21<29>
14 Composite 38 6490732005…12<38> 23×3×3923×6893886486…31<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 #14:
689388648694894166319176105269331
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 '31298' --type 48 --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":"31298"},"type":48,"part":"last20","fr":0}}'