factordbrpc · fdb
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Inverse home prime · Base 21 of 4063 length 25 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
5 Fully factored 11 46220597053<11> 499×92626447
6 Fully factored 12 857813526166<12> 2×41×283×36965161
7 Fully factored 15 1509694536…87<15> 43×73×2029×3469×6833
8 Fully factored 18 1139798750…47<18> 757×1505678667…71<15>
9 Fully factored 19 1394409013…88<19> 23×1118809×155791673729<12>
10 Fully factored 22 5892486565…44<22> 22×17×61×3919×3624804512…87<15>
11 Fully factored 26 1371004712…88<26> 22×13×1361×1937213464…79<21>
12 Fully factored 29 1661472843…57<29> 89×14723×117416419×1079886464…49<15>
13 Fully factored 32 1668126297…20<32> 22×5×11×564133×96678667×1390253794…11<16>
14 Fully factored 37 1988853550…51<37> 41×6837069647<10>×7094943547…13<25>
15 Fully factored 39 1183428139…81<39> 13×17×827×2539×17191×223963×4835639×1369777787…51<14>
16 Fully factored 44 3529343250…60<44> 24×5×9127×618014191×7821272423…71<29>
17 Fully factored 49 5328032117…02<49> 2×105943×175382021×10111583941<11>×1197690882…59<13>×1183901488…93<14>
18 Fully factored 53 5494072783…59<53> 101×71437×9165157×8308256916…51<39>
19 Fully factored 55 6111410479…06<55> 2×17×199×577×68581×2282600113…43<44>
20 Fully factored 58 7995434625…79<58> 14543×3305628914…99<23>×1663159779…47<32>
21 Fully factored 61 2040602705…89<61> 69193×7973090578…61<16>×3698874526…93<40>
22 Fully factored 63 1111213758…47<63> 2521×1336189×3721357766…07<13>×8864524558…09<40>
23 Fully factored 64 5592458277…26<64> 2×116903×468647×722639×2813738846…17<14>×1124800459…59<15>×2231621782…79<20>
24 Composite 69 1865239040…46<69> 2×172×6451633×5001923023…29<59>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (59 digits) of term #24:
50019230237039833294599697011999342445053372304416954218929
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 '4063' --type 71 --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":"4063"},"type":71,"part":"last20","fr":0}}'