factordbrpc · fdb
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Inverse home prime · Base 21 of 2427 length 12 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 2427 3×809
1 Fully factored 5 16992 25×32×59
2 Fully factored 12 106534182995<12> 5×269×79207571
3 Fully factored 12 733541320685<12> 5×103×821×1734899
4 Fully factored 15 1487955651…28<15> 22×41×173×18257×287257
5 Fully factored 19 4791414136…92<19> 22×47×61×4178073017…19<15>
6 Fully factored 23 3583371159…11<23> 29527×209802533×5784445621<10>
7 Fully factored 25 2026161154…41<25> 11×13×37×3829448410…51<21>
8 Fully factored 26 7447549563…32<26> 28×17×108757717×1573491615…23<15>
9 Fully factored 36 2250987839…33<36> 37×347×42703×24696967199<11>×1662416874…51<17>
10 Fully factored 38 2378201530…17<38> 13×90752939×3253606779…47<13>×6195545334…73<16>
11 Composite 40 3908650549…52<40> 22×79×233×5308646913…09<35>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (35 digits) of term #11:
53086469137492324569083353667362409
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 '2427' --type 71 --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":"2427"},"type":71,"part":"last20","fr":0}}'