factordbrpc · fdb
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Inverse home prime · Base 20 of 185 length 28 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
8 Fully factored 9 319570913 17×18798289
9 Fully factored 9 375965797 23×16346339
10 Fully factored 10 6538535623<10> 37×176717179
11 Fully factored 11 70686871637<11> 47947×1474271
12 Fully factored 12 235883407947<12> 3×11×7147982059<10>
13 Fully factored 13 2859192823…23<13> 7×2423×168574543
14 Fully factored 14 2697192692…67<14> 3×18013×499119653
15 Fully factored 16 1597182889…63<16> 3×5323942966…21<15>
16 Fully factored 17 1064788593…23<17> 13×1039×614717×1282417
17 Fully factored 18 6565976023…93<18> 109×1531×1054819×3730093
18 Fully factored 20 3819615569…09<20> 1049×1867×467963×41676221
19 Fully factored 22 8535290090…49<22> 59×55589×2602420150…99<16>
20 Fully factored 24 1665548896…59<24> 19×233×333215879×112907340023<12>
21 Fully factored 25 1156171161…79<25> 17×47×18869×7668783352…09<17>
22 Fully factored 26 9816042690…57<26> 3×13×17×11986147991<11>×1235217041…29<14>
23 Fully factored 28 2529724499…63<28> 37×431×4788460021<10>×3312824022…49<14>
24 Fully factored 31 2713865439…37<31> 3×2707×217307×1537818508…71<22>
25 Fully factored 33 7873630765…43<33> 29×2715045091…67<32>
26 Fully factored 35 1086018036…29<35> 3×11×1511×7479257×26764892489<11>×1088014476…71<13>
27 Composite 39 1140865868…23<39> 19×23×2610677043…79<36>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (36 digits) of term #27:
261067704394599109954191695957947379
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 '185' --type 70 --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":"185"},"type":70,"part":"last20","fr":0}}'