factordbrpc · fdb
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Home prime · Base 33 of 266 length 20 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 3 266 2×7×19
1 Fully factored 4 2428 22×607
2 Fully factored 5 74659 13×5743
3 Fully factored 6 472924 22×137×863
4 Fully factored 8 80792684 22×7×2885453
5 Fully factored 11 88096655096<11> 23×23×478786169
6 Fully factored 14 9575120547…98<14> 2×29×547×3018067373<10>
7 Fully factored 16 4432406324…27<16> 72×9045727192…23<14>
8 Fully factored 18 3646062557…85<18> 5×163×223×64013×31339601
9 Fully factored 21 2834504855…65<21> 5×103×523×85331×12332793287<11>
10 Fully factored 24 3053903211…89<24> 139×2197052669…51<22>
11 Fully factored 25 8333710477…74<25> 2×7×1409×1797857×2349872150…57<15>
12 Fully factored 30 1573283462…20<30> 22×5×7866417314…41<28>
13 Fully factored 33 1598732054…94<33> 2×71×318383929×3536194957…83<22>
14 Fully factored 36 1741124378…53<36> 71×3089×1801769×4406100804…23<24>
15 Fully factored 39 1977508564…40<39> 23×5×207469×2382896438…39<32>
16 Fully factored 43 6804598581…55<43> 5×277×1621×23143×100799×1299253343…79<28>
17 Fully factored 47 1887737464…52<47> 23×83357×14565637×535769149957<12>×3627457614…13<22>
18 Fully factored 52 8787582577…74<52> 2×853×5150986270…79<49>
19 Composite 54 3913376824…82<54> 2×1129×14813×1169996892…33<47>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (47 digits) of term #19:
11699968927428563275050078903924145568944517633
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 '266' --type 50 --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":"266"},"type":50,"part":"last20","fr":0}}'