factordbrpc · fdb
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Home prime · Base 13 of 11291 length 21 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
1 Fully factored 5 16992 25×32×59
2 Fully factored 10 1767418959<10> 3×3623×162611
3 Fully factored 11 33158855269<11> 431×76934699
4 Fully factored 12 351656875450<12> 2×52×179×39291271
5 Fully factored 14 5625753595…06<14> 2×3×23×877×464838431
6 Fully factored 16 8825313640…36<16> 23×7×8443×18665745167<11>
7 Fully factored 20 1876276243…59<20> 115859×193603×836478767
8 Fully factored 21 4561825437…37<21> 1047438349<10>×435522094613<12>
9 Fully factored 22 1877177524…26<22> 2×3×739×4233598386…39<18>
10 Fully factored 23 4288785465…71<23> 7×233×31511×8344843103…31<15>
11 Fully factored 26 2282362364…34<26> 2×41×639761299×4350636310…63<15>
12 Fully factored 28 1219805915…25<28> 3×52×17×410243×2332058126…49<19>
13 Fully factored 31 4072261943…78<31> 2×271×887×199615081×4243453524…97<17>
14 Fully factored 33 4279730312…38<33> 2×11×61×179×6656659×2676421722…49<21>
15 Fully factored 37 1272528160…25<37> 52×17×5279×3080829555…07<13>×1841022676…81<18>
16 Fully factored 40 5245687779…34<40> 2×1424743×1840924215…69<34>
17 Fully factored 41 2902525939…58<41> 2×19×7638226157…91<39>
18 Fully factored 42 3480484397…40<42> 22×5×4951×2796556918…87<15>×1256877947…51<23>
19 Fully factored 44 6069241431…18<44> 2×1869168054…97<17>×1623514113…97<28>
20 Composite 45 8542734579…20<45> 23×5×11×113×1718168660…61<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 #20:
17181686603684320240129281927145447372961
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 '11291' --type 31 --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":"11291"},"type":31,"part":"last20","fr":0}}'