factordbrpc · fdb
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Inverse home prime · Base 15 of 4882 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 14 1609583297…14<14> 2×8047916486…57<13>
7 Fully factored 15 1207187472…57<15> 79×938099×1628917
8 Fully factored 16 4174736319…79<16> 199×1338451×15673771
9 Fully factored 17 4017016105…49<17> 113×3554881509…73<15>
10 Fully factored 17 7998483395…38<17> 2×7×19×311×966864516113<12>
11 Fully factored 21 1651978669…32<21> 22×1233902363<10>×33470611591<11>
12 Fully factored 23 1930084124…82<23> 2×9650420624…41<22>
13 Fully factored 24 1447563093…17<24> 179×7159×1129619312…97<18>
14 Fully factored 25 1286706997…79<25> 71×1812263377…49<23>
15 Fully factored 25 4077592599…96<25> 23×7×11×3159041×2095404429…91<16>
16 Fully factored 29 1812473674…82<29> 2×179×37222609×1360134542…81<19>
17 Fully factored 30 7843221153…87<30> 937434577969<12>×8366686420…23<18>
18 Fully factored 31 7236979488…94<31> 2×31×37×472×55799×409271×6253610438…91<14>
19 Fully factored 37 1386324013…17<37> 349×86950397×4568438151…89<26>
20 Fully factored 38 2634391644…49<38> 227×439×16979×3603566557<10>×4320612390…11<19>
21 Fully factored 41 9578096951…77<41> 31×89681×778198801×1525281803…83<13>×2902528187…29<14>
22 Fully factored 45 1099383416…81<45> 211×22943×96441413×2354794193…69<30>
23 Fully factored 45 4582888847…86<45> 2×79215811×2892660435…13<37>
24 Fully factored 46 7413572311…92<46> 22×29×617×1035820196…61<42>
25 Composite 50 1769795914…57<50> 23×4721×1629901470…79<45>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (45 digits) of term #25:
162990147095304878409738436218510798816554579
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 '4882' --type 65 --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":"4882"},"type":65,"part":"last20","fr":0}}'