factordbrpc · fdb
Sign in
Show
Open
Inverse home prime · Base 11 of 623 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 5 38788 22×9697
3 Fully factored 7 1173361 7×167623
4 Fully factored 7 1843860 22×3×5×79×389
5 Fully factored 9 690300910 2×5×13×89×59663
6 Fully factored 12 105697948622<12> 2×7×16189×466357
7 Fully factored 13 9087980564…95<13> 5×53×84299×406817
8 Fully factored 14 8720494909…34<14> 2×3×17×73×11711650429<11>
9 Fully factored 17 2074790314…54<17> 2×3×7×17×79×367831492159<12>
10 Fully factored 19 7167995186…27<19> 43×59×2825382415…71<16>
11 Fully factored 20 4136642393…93<20> 109×3795084764…77<18>
12 Fully factored 20 4592052565…26<20> 2×29×51040981×15511715987<11>
13 Fully factored 22 4425673602…89<22> 3×7×102059×2064946374…51<16>
14 Fully factored 23 4023996310…40<23> 26×5×1181×47358517×2248327661<10>
15 Fully factored 29 1250051589…26<29> 2×3×17×277×2293×165173×1168166867…21<16>
16 Fully factored 33 5904464717…46<33> 2×7×13×17×6229081×3063629509…39<23>
17 Fully factored 37 1057647996…99<37> 503×34147×98942303×6223555928…13<21>
18 Fully factored 38 2859707137…96<38> 22×7×1613×8161×245649000563<12>×3158426545…23<18>
19 Fully factored 41 2571046045…81<41> 32×19×4572059×3167054245…57<16>×1038356333…97<17>
20 Fully factored 44 1237531408…98<44> 2×32×8929×7699825839…09<38>
21 Composite 46 1500478228…36<46> 22×17×183949×6811073×1761196522…51<32>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (32 digits) of term #21:
17611965225299763092143882685651
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 '623' --type 21 --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":"623"},"type":21,"part":"last20","fr":0}}'