factordbrpc · fdb
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Inverse home prime · Base 5 of 37581 length 24 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
4 Fully factored 7 1553608 23×7×27743
5 Fully factored 8 86697812 22×4177×5189
6 Fully factored 10 2027057562<10> 2×34×929×13469
7 Fully factored 12 131536108592<12> 24×7×131×181×49531
8 Fully factored 15 3023150020…62<15> 2×2663×8599×6601013
9 Fully factored 16 1611575573…17<16> 33×269×221888417159<12>
10 Fully factored 17 1733503259…93<17> 7×19×5449621×23917001
11 Fully factored 18 1459777927…32<18> 23×11×461×2039×4219×418289
12 Fully factored 20 3989117336…37<20> 11×137×6020087×4397043793<10>
13 Fully factored 21 6709356374…36<21> 22×53×223×1419188673…61<17>
14 Fully factored 23 2771852878…37<23> 7×13×23×617265247×21455029747<11>
15 Fully factored 24 4092222165…57<24> 2969×50221×51135377×53671309
16 Fully factored 25 3199059320…44<25> 23×809×853×5794750658…59<18>
17 Fully factored 27 7073670237…87<27> 3×547×4310585153…07<24>
18 Fully factored 28 1347057860…13<28> 79×37409×8140981×5598946517…43<14>
19 Fully factored 28 5339571492…04<28> 23×6674464366…63<27>
20 Fully factored 29 8343080457…37<29> 383×953×7109×3215335110…07<20>
21 Fully factored 30 9812424044…08<30> 22×32×9324389×2923165631…77<22>
22 Fully factored 32 1784158710…12<32> 23×19×1173788625…31<30>
23 Composite 33 3668089453…12<33> 24×2292555908…07<32>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (32 digits) of term #23:
22925559087384916503789823443707
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 '37581' --type 15 --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":"37581"},"type":15,"part":"last20","fr":0}}'