factordbrpc · fdb
Sign in
Show
Open
Home prime · Base 15 of 970 length 22 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
2 Fully factored 6 109993 13×8461
3 Fully factored 6 666586 2×23×43×337
4 Fully factored 9 359329837 9157×39241
5 Fully factored 9 463612366 2×7×307×107867
6 Fully factored 11 95060189117<11> 1301×3617×20201
7 Fully factored 13 3334503833…51<13> 1747247×1908433
8 Fully factored 14 1990223726…08<14> 25×7×64579×1375823
9 Fully factored 20 1407520351…73<20> 157775581×89210278433<11>
10 Fully factored 20 9098135050…58<20> 2×190529×2387598489…51<15>
11 Fully factored 22 3326590599…76<22> 27×313933×8278514541…49<14>
12 Fully factored 28 2404873197…24<28> 22×11×5465620903…21<26>
13 Fully factored 29 3679042993…96<29> 22×31×103×541×9787×38287×1420946613…67<14>
14 Fully factored 34 1826027753…92<34> 23×29×7870809282…31<31>
15 Fully factored 37 6163256212…56<37> 22×2359267×6530901560…67<30>
16 Fully factored 40 1389543764…42<40> 2×7×13×3019×60280943×1502681857…87<13>×2791840788…89<14>
17 Fully factored 42 3681657446…64<42> 24×47×2449281551<10>×1998880475…57<30>
18 Fully factored 46 1053089502…07<46> 19531×317711×1697104370…27<36>
19 Fully factored 46 2843988593…27<46> 7×13×15066143×7601926887…13<18>×2728730745…83<19>
20 Fully factored 48 8704934894…33<48> 11×2371×397303540651<12>×8400765323…43<32>
21 Composite 50 1941013403…18<50> 2×7×617×2247063444…61<46>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (46 digits) of term #21:
2247063444137389837712199198266638361521083461
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 '970' --type 33 --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":"970"},"type":33,"part":"last20","fr":0}}'