factordbrpc · fdb
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Inverse home prime · Base 18 of 3279 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 6 303717 3×29×3491
3 Fully factored 8 20360037 3×23×295073
4 Fully factored 10 1720866153<10> 3×16843×34057
5 Fully factored 11 64353320553<11> 3×41843×512657
6 Fully factored 12 968701015353<12> 3×41×7875618011<10>
7 Fully factored 14 4593060424…93<14> 3×251×60996818381<11>
8 Fully factored 15 3557334448…13<15> 3×17×167×18539×2252951
9 Fully factored 17 2482743314…57<17> 3×8275811048…19<16>
10 Fully factored 18 1489645988…45<18> 3×5×53×2909×64412806439<11>
11 Fully factored 20 3943481041…97<20> 3×22615921×581224917019<12>
12 Fully factored 21 3558375372…89<21> 3×71×139×44062913×272762179
13 Fully factored 24 3155398484…17<24> 3×11×223×700993×6116764053…91<14>
14 Fully factored 26 1213316976…09<26> 3×1107166393<10>×3652919695…71<16>
15 Fully factored 27 7245905585…05<27> 3×5×323879×1491484080…33<21>
16 Fully factored 29 9131164312…45<29> 3×5×27341231×12361146613<11>×18011839861<11>
17 Fully factored 32 3937228896…73<32> 3×7×307×6107071345…59<28>
18 Fully factored 33 6410959215…81<33> 3×3052937×9355589×271608377×27546702707<11>
19 Fully factored 36 3511718730…85<36> 3×5×13×237807113×554189246371<12>×1366476532…41<14>
20 Fully factored 39 1742016562…41<39> 3×977×22918759×3370126689…23<14>×7694831894…23<14>
21 Composite 41 1765719623…89<41> 3×499×1179505426…37<38>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (38 digits) of term #21:
11795054264489582703008588371500693037
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 '3279' --type 68 --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":"3279"},"type":68,"part":"last20","fr":0}}'