factordbrpc · fdb
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Home prime · Base 18 of 19108 length 35 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
15 Fully factored 22 3569457898…95<22> 5×1090885013<10>×654415058683<12>
16 Fully factored 24 2006270095…15<24> 5×11×10870137349<11>×335576607097<12>
17 Fully factored 25 4012798684…97<25> 7873×5096911831…89<21>
18 Fully factored 26 1721019140…53<26> 18092861×9512144818…73<18>
19 Fully factored 27 1220660318…25<27> 52×397×1519391×29358757×275712907
20 Fully factored 29 2181513609…07<29> 83×149×2088767753<10>×8445073072…57<15>
21 Fully factored 30 3447274718…01<30> 73×24448843×1931500044…59<21>
22 Fully factored 31 5480826102…19<31> 37×59×2510685342…93<28>
23 Fully factored 32 4976178323…21<32> 37×2141×117703×5336911627…71<22>
24 Fully factored 35 1620223012…43<35> 11×1682706261…13<13>×8753340051…01<21>
25 Fully factored 35 8953022849…37<35> 209267×4278277439…11<30>
26 Fully factored 36 2800538415…03<36> 13×4093×4339×1093181937…33<14>×1109620163…41<15>
27 Fully factored 38 3464853464…13<38> 23×421661×21772123×261640459×6271738184…03<15>
28 Fully factored 40 1057051934…23<40> 103×191×5373110021…51<35>
29 Fully factored 40 4715153817…39<40> 7×112×14929×3728908583…53<33>
30 Fully factored 42 1127524778…97<42> 7×17×277×17881×1912967365…99<33>
31 Fully factored 43 2121517045…59<43> 491×2917×1481250821…97<37>
32 Fully factored 43 7248429608…69<43> 59×10429×1178010730…79<38>
33 Fully factored 45 2823890617…91<45> 3389×6762473×1232170359…03<35>
34 Composite 47 1619430150…87<47> 29×283×1973230352…41<43>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (43 digits) of term #34:
1973230352555315615502510178799607754935341
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 '19108' --type 35 --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":"19108"},"type":35,"part":"last20","fr":0}}'