factordbrpc · fdb
Sign in
Show
Open
Mid-divisor concatenation · Base 8 of 3146 length 48 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
28 Fully factored 18 1185228258…49<18> 11×19×89×6371852364…49<13>
29 Fully factored 18 6544708770…81<18> 3×37×5896134027…71<16>
30 Fully factored 19 2005494368…95<19> 5×7×31×61×3030134272…27<14>
31 Fully factored 19 2328707968…47<19> 19×21379×5732895704…47<13>
32 Fully factored 20 1429193285…79<20> 7×1109×3821×481819467673<12>
33 Fully factored 20 1630708998…97<20> 3×31×1229×1426729483…01<15>
34 Fully factored 20 3217188808…33<20> 97×3316689493…89<18>
35 Fully factored 21 1121650548…61<21> 3×7×41×156257×833709863893<12>
36 Fully factored 21 5917012025…01<21> 613×9652548165…77<18>
37 Fully factored 21 7077061371…65<21> 5×83×89×1916085385…79<17>
38 Fully factored 22 5322913632…99<22> 7×35731×2128169469…47<17>
39 Fully factored 23 3604567977…71<23> 112×1637×1819781184…23<18>
40 Fully factored 24 2283674148…75<24> 52×29×2711×15889×7312570168…09<13>
41 Fully factored 25 1098787965…09<25> 33×3137×72269×1795078998…39<15>
42 Fully factored 25 1722939866…75<25> 53×11×4086119773<10>×306659433713<12>
43 Fully factored 25 4942009823…65<25> 3×5×431×15511×65071×757369473181<12>
44 Fully factored 25 9566087988…63<25> 31727×3015125283…69<21>
45 Fully factored 26 1872861668…93<26> 3×3313×1884356241…87<22>
46 Fully factored 26 4693748482…31<26> 5821×8063474459…11<22>
47 Composite 27 2199192258…39<27> 32×11×2221406321…61<25>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (25 digits) of term #47:
2221406321704376407725461
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 '3146' --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":"3146"},"type":142,"part":"last20","fr":0}}'