factordbrpc · fdb
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Inverse home prime · Base 14 of 12481 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 7 1580841 32×175649
3 Fully factored 8 34427249 41×179×4691
4 Fully factored 9 180244581 3×11×5461957
5 Fully factored 10 1070543729<10> 29×3001×12301
6 Fully factored 11 92621410561<11> 2069×44766269
7 Fully factored 12 122838644205<12> 33×5×151×6025933
8 Fully factored 14 4537248527…57<14> 33×11×13×43×109×2507251
9 Fully factored 17 5180244172…77<17> 11×577×911×8959078781<10>
10 Fully factored 18 9444078869…89<18> 43×164147×133800642809<12>
11 Fully factored 20 1410439459…91<20> 83×113×353833×4250104213<10>
12 Fully factored 20 8781160199…51<20> 47×1868331957…33<19>
13 Fully factored 21 3661930636…15<21> 5×5419×1351515274…17<17>
14 Fully factored 22 7268773510…79<22> 37306817×1948376756…87<15>
15 Fully factored 23 2053852210…65<23> 5×17×2416296717…89<21>
16 Fully factored 24 6630318193…59<24> 655103×598838953×1690109101<10>
17 Fully factored 26 1878050387…27<26> 1901×9879276102…27<22>
18 Fully factored 26 2710873362…89<26> 33×37×2713586949…11<23>
19 Fully factored 29 1459432187…25<29> 52×89×4973×821377×23963887×67009387
20 Fully factored 32 7849181936…59<32> 59×1201×1107718417…01<28>
21 Composite 33 5957575503…79<33> 271×2198367344…49<31>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (31 digits) of term #21:
2198367344496076083779123512049
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 '12481' --type 64 --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":"12481"},"type":64,"part":"last20","fr":0}}'