factordbrpc · fdb
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Inverse home prime · Base 21 of 7265 length 23 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
3 Fully factored 6 611762 2×17×19×947
4 Fully factored 7 8778905 5×59×29759
5 Fully factored 9 275599343 449×613807
6 Fully factored 10 5684467076<10> 22×47×73×414199
7 Fully factored 14 3552425576…63<14> 223×65633×2427157
8 Fully factored 15 2081678698…73<15> 43×373×12978855907<11>
9 Fully factored 16 2524140875…03<16> 43×79×797×9629×96823
10 Fully factored 20 3391493577…11<20> 911×4421×8420775849…81<13>
11 Fully factored 21 7222172804…93<21> 79×131×83537×481939×1733399
12 Fully factored 24 2677622833…65<24> 5×31325656903<11>×1709539781…71<13>
13 Fully factored 25 1357853337…19<25> 840859223×1614840273…53<16>
14 Fully factored 25 2908470311…96<25> 22×13×29×523×1278006721<10>×2885549089<10>
15 Fully factored 30 1965702943…39<30> 19×1034580496…81<29>
16 Fully factored 30 2172619043…20<30> 22×5×149×89098529041<11>×8182702911…39<15>
17 Fully factored 34 2654403307…38<34> 2×19801×33629×124291×194827×8230894057…23<14>
18 Fully factored 38 5192712965…73<38> 79×251×2618746767…37<34>
19 Fully factored 39 5092964900…67<39> 6285881774…69<13>×8102228269…43<26>
20 Fully factored 40 1351442031…12<40> 26×11×32717×5867475554…59<32>
21 Fully factored 47 2055244671…79<47> 3259×6306365976…81<43>
22 Composite 47 5840325530…00<47> 23×52×17×192×4758290313…87<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 #22:
47582903133657620479910875847241870352687
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 '7265' --type 71 --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":"7265"},"type":71,"part":"last20","fr":0}}'