factordbrpc · fdb
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Inverse home prime · Base 26 of 1285 length 25 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
5 Fully factored 10 2465277211<10> 29×85009559
6 Fully factored 11 57466461913<11> 72×19×47×83×15823
7 Fully factored 15 1270883194…61<15> 19×281609×23752291
8 Fully factored 15 2822099075…69<15> 29×53×1973×93061769
9 Fully factored 18 7474544641…49<18> 192×8233×59021×4261013
10 Fully factored 20 2313518646…05<20> 32×5×17×6802951×4445434607<10>
11 Fully factored 23 2413650355…61<23> 10028041×2406901164…21<16>
12 Fully factored 23 2859729772…37<23> 7433×449171×8565429700…59<13>
13 Fully factored 23 6879590543…13<23> 31×79×32590979×861938737403<12>
14 Fully factored 27 1216773881…67<27> 3×4055912939…89<26>
15 Fully factored 28 1054537364…17<28> 101×519445221289<12>×2010022149…53<14>
16 Fully factored 29 7377473715…93<29> 683×809902529×1333687903…99<18>
17 Fully factored 32 1882728478…11<32> 353×1049×5084374105…63<26>
18 Fully factored 33 6040936047…65<33> 32×5×4691×2861714416…67<28>
19 Fully factored 36 8840287296…69<36> 1783×2027×6161349199<10>×3969953901…91<20>
20 Fully factored 38 9850062529…75<38> 52×3940025011…71<37>
21 Fully factored 40 2663456908…31<40> 19×53×239×1579×31989844099<11>×2190907538…07<21>
22 Fully factored 43 9554272355…21<43> 43×71×3129470146…57<40>
23 Fully factored 46 1430092749…71<46> 1607×75347×611846707×1930366338…57<29>
24 Composite 49 1245278836…43<49> 3×151×283×859×3181×3554881570…83<37>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (37 digits) of term #24:
3554881570404431800679514538672158583
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 '1285' --type 76 --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":"1285"},"type":76,"part":"last20","fr":0}}'