factordbrpc · fdb
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Home prime · Base 15 of 2725 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 7 6442286 2×17×189479
6 Fully factored 9 354817604 22×1129×78569
7 Fully factored 11 82869912944<11> 24×7×13×56916149
8 Fully factored 15 2780425933…99<15> 29863×9310604873<10>
9 Fully factored 16 1148043351…98<16> 2×23×2495746416…63<14>
10 Fully factored 17 6139497528…88<17> 23×31×1506977×164276153
11 Fully factored 21 2111254446…03<21> 199211×1059808166…73<16>
12 Fully factored 21 3877045255…98<21> 2×1938522627…49<21>
13 Fully factored 22 3149636022…99<22> 7×23×401×1609×1789×16948206059<11>
14 Fully factored 25 2361847028…84<25> 22×12689×4653335622…89<20>
15 Fully factored 27 1608625675…64<27> 23×3533×5691429648…51<22>
16 Fully factored 30 5410144651…76<30> 22×7×191×67447×2086568327<10>×718823439823<12>
17 Fully factored 34 1847814654…23<34> 31967333×48609702137<11>×1189129195…63<16>
18 Fully factored 35 3587611144…13<35> 13×8013457×66996565219<11>×5140312987…47<16>
19 Fully factored 37 2627663206…72<37> 22×9335562403<10>×7036703020…31<26>
20 Fully factored 38 9273897912…06<38> 2×571×84916002089<11>×9563275515…37<24>
21 Fully factored 41 2105756612…87<41> 13×1619812778…99<40>
22 Fully factored 42 1278159786…24<42> 22×11×59×1321×10687×285953×2437497128…71<13>×5003605538…19<13>
23 Fully factored 46 1073001261…19<46> 7×41×3738680353…37<43>
24 Composite 47 5294788395…37<47> 13×47×227167×3814715512…01<39>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (39 digits) of term #24:
381471551249459217560034937674845405801
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 '2725' --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":"2725"},"type":33,"part":"last20","fr":0}}'