factordbrpc · fdb
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Inverse home prime · Base 27 of 4319 length 18 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
0 Fully factored 4 4319 7×617
1 Fully factored 5 16666 2×13×641
2 Fully factored 6 467642 2×7×33403
3 Fully factored 8 24350978 2×12175489
4 Fully factored 9 328738205 5×41×1603601
5 Fully factored 11 31563679595<11> 5×7×17×173×239×1283
6 Fully factored 14 1342406596…68<14> 24×7×997×8263×14549
7 Fully factored 20 8088110591…76<20> 22×6451×10133×309329973943<12>
8 Fully factored 23 8736392116…49<23> 11×19×32173×87179×149032981583<12>
9 Fully factored 26 3068456929…39<26> 1427×2150285164…57<23>
10 Fully factored 27 4232406289…58<27> 2×281×127166453×5922137377…03<16>
11 Fully factored 29 4515983589…49<29> 113×3996445654…73<27>
12 Fully factored 30 2913408881…30<30> 2×5×950507×1594477×1922329635…97<17>
13 Fully factored 34 2885313655…08<34> 23×72×227×1783×1818568916…89<26>
14 Fully factored 40 3744272131…81<40> 1861×877714549×2292280368…29<28>
15 Fully factored 42 4719602001…49<42> 61×72780233×6021028655…29<13>×1765596282…37<20>
16 Fully factored 44 3802554055…06<44> 2×101×433×4347465364…41<39>
17 Composite 46 6238137620…55<46> 5×11×17×439×1519773335…27<41>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (41 digits) of term #17:
15197733351556114180934699082821887615927
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 '4319' --type 77 --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":"4319"},"type":77,"part":"last20","fr":0}}'