factordbrpc · fdb
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Inverse home prime · Base 18 of 141 length 26 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
6 Fully factored 8 23786265 3×5×1217×1303
7 Fully factored 10 2462501505<10> 3×5×29×5660923
8 Fully factored 12 594261062337<12> 3×179×1106631401<10>
9 Fully factored 13 6453874333…57<13> 3×2151291444…19<13>
10 Fully factored 14 3872324600…45<14> 3×5×11×17×13805078789<11>
11 Fully factored 16 1449201951…65<16> 3×5×233×414650057527<12>
12 Fully factored 17 4352830443…37<17> 3×127×4182949×27312673
13 Fully factored 19 5417722458…21<19> 3×383×7793×605051090653<12>
14 Fully factored 22 6667639165…93<22> 3×7×10223×3105806778…71<17>
15 Fully factored 25 1056353958…85<25> 3×5×72×1607×122188597×7319401489<10>
16 Fully factored 28 2743409520…57<28> 3×19×103×4672814717…67<24>
17 Fully factored 30 8829601160…97<30> 3×19×31×37139×1345470968…69<23>
18 Fully factored 34 2668866665…81<34> 3×7×2549×4985833221…89<29>
19 Fully factored 35 9421070908…57<35> 3×161318789×77770999153<11>×2503089544…07<16>
20 Fully factored 37 5471532370…09<37> 3×19×2456685677…11<15>×3907369870…67<21>
21 Fully factored 40 2636162027…41<40> 3×4614607×1904215625…21<33>
22 Fully factored 42 1165798951…01<42> 3×17×1933783×4251789197<10>×2780187088…01<24>
23 Fully factored 44 3376246164…49<44> 3×409×5167×11059×730951141×6587898101…19<24>
24 Fully factored 48 4665782286…65<48> 3×5×231433×1344026791…07<42>
25 Composite 50 8228401253…09<50> 3×11×83×58243×126285527×4084379726…71<34>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (34 digits) of term #25:
4084379726540845743602119643499071
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 '141' --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":"141"},"type":68,"part":"last20","fr":0}}'