factordbrpc · fdb
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Terminates
Mid-divisor concatenation · Base 8 of 2209 length 25 The sequence reaches a prime. ↓ .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 6 397985 5×7×83×137
6 Fully factored 7 2380461 3×793487
7 Fully factored 7 7084943 23×308041
8 Fully factored 8 48542537 1051×46187
9 Fully factored 9 275559531 3×13×7065629
10 Fully factored 9 661377053 12413×53281
11 Fully factored 10 3254046753<10> 3×3557×304943
12 Fully factored 11 22379013935<11> 5×4475802787<10>
13 Fully factored 11 47425475747<11> 13×139×1163×22567
14 Fully factored 12 339019594235<12> 5×7×95581×101341
15 Fully factored 13 1062638073…27<13> 131×463×17519959
16 Fully factored 13 8140725376…43<13> 7×179×6496987531<10>
17 Fully factored 14 1076968503…07<14> 367×29345190821<11>
18 Fully factored 14 2524939315…33<14> 3×8416464384…11<13>
19 Fully factored 15 1139695806…07<15> 7×29×127×1033×4279459
20 Fully factored 15 5743792906…25<15> 52×19997×1148930921<10>
21 Fully factored 16 4294324199…21<16> 32×29×15031×1094627731<10>
22 Fully factored 17 3369909618…03<17> 11×1201×2550836135…73<13>
23 Fully factored 17 5810514329…17<17> 29×37×53×119687×8536739
24 Fully factored 18 2520138710…99<18> 2520138710…99<18>
↳ Terminates The sequence reaches a prime and terminates.
From the command linefdb · curl
fdb
fdb seq view '2209' --type 142 --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":"2209"},"type":142,"part":"last20","fr":0}}'