factordbrpc · fdb
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Home prime · Base 25 of 2305 length 19 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
0 Fully factored 4 2305 5×461
1 Fully factored 4 3586 2×11×163
2 Fully factored 5 38288 24×2393
3 Fully factored 9 508627393 569×893897
4 Fully factored 10 5557534522<10> 2×383×7255267
5 Fully factored 11 15954520892<11> 22×3119×1278817
6 Fully factored 13 7965030575…92<13> 22×23×29×757×3943717
7 Fully factored 18 1261755445…42<18> 2×11×11731×488897112181<12>
8 Fully factored 19 3680634033…81<19> 3×3361×694987×525238061
9 Fully factored 22 2994303176…36<22> 22×521×1109×4073×318091526447<12>
10 Fully factored 26 3075326885…22<26> 2×3×408209×1255617786…43<20>
11 Fully factored 29 1929649466…93<29> 17903×38044957×2833058317…83<17>
12 Fully factored 30 2605252059…83<30> 7×1092×1483×5853219023<10>×360879976361<12>
13 Fully factored 34 1019583249…36<34> 22×269×54437×2254771×7719937718…43<19>
14 Fully factored 37 4656774785…68<37> 22×19×8548393703<10>×737618824037<12>×9717513113…63<13>
15 Fully factored 41 7322231836…38<41> 2×7×223×1811443×60604097×2136406640…49<24>
16 Fully factored 44 4974935115…49<44> 3×173×9585616792…71<41>
17 Fully factored 46 1776452695…71<46> 3×40038331657<11>×1478959971…01<35>
18 Composite 47 4421369968…01<47> 67×5107×9677×1335289565…77<38>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (38 digits) of term #18:
13352895659306327836230796949404655077
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 '2305' --type 42 --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":"2305"},"type":42,"part":"last20","fr":0}}'