factordbrpc · fdb
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Home prime · Base 29 of 879 length 22 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
2 Fully factored 13 1036224712…71<13> 709×12197×119827
3 Fully factored 14 1223878912…65<14> 5×61×40127177473<11>
4 Fully factored 16 2134091324…99<16> 59×3617103940…61<14>
5 Fully factored 17 2485789780…20<17> 22×5×1242894890…21<16>
6 Fully factored 20 2129113243…26<20> 2×3×11×3225929156…61<18>
7 Fully factored 21 6301129070…41<21> 3×72×167×317×359×1607×9619×14591
8 Fully factored 26 2358529024…73<26> 3×7×2797×4937×8133291480…17<17>
9 Fully factored 29 1980712231…21<29> 3×37×431×4140198222…81<24>
10 Fully factored 32 1562747703…00<32> 23×54×13×37×41×617×89779×2861080017…03<16>
11 Fully factored 42 1834174338…08<42> 22×11×251×311×591638149×9026048368…63<26>
12 Fully factored 45 1550615835…25<45> 53×17×41×7303339×11176601×558786373×3901974351…67<17>
13 Fully factored 49 9405561289…05<49> 33×5×112×12319597×4586601354…39<18>×1019009147…41<21>
14 Fully factored 55 3991170161…45<55> 5×13×2711×125003×1811911302…01<45>
15 Fully factored 58 5889608892…65<58> 5×29531×19504007×407621237789<12>×5017156524…01<34>
16 Fully factored 61 4580359673…21<61> 13×4463×7894585694…59<56>
17 Fully factored 63 3473201740…39<63> 3×7×1031×5879×1716103×1590029709…97<49>
18 Fully factored 67 2083699422…96<67> 22×19×208049×3854090599…59<13>×4391194429…19<21>×7786660862…49<26>
19 Fully factored 71 3278282405…07<71> 3×1117156189<10>×12424284989<11>×7872991953…89<51>
20 Fully factored 73 1392832247…06<73> 2×3×83×251×643×62603×3264280259<10>×6141395017<10>×3941899779…21<19>×3502914854…11<22>
21 Composite 78 6772208712…89<78> 41×3335953×4951383375…93<70>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (70 digits) of term #21:
4951383375448615977233065232343894358936580431055129095851555376727693
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 '879' --type 46 --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":"879"},"type":46,"part":"last20","fr":0}}'