factordbrpc · fdb
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Home prime · Base 17 of 1385 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 12 407782101844<12> 22×13×16421×477557
7 Fully factored 14 7414073875…79<14> 40111×1848389189<10>
8 Fully factored 15 2798064551…40<15> 22×3×5×179×2699×9652739
9 Fully factored 18 3585053277…13<18> 3×788813×151495697867<12>
10 Fully factored 20 1017751150…83<20> 53×193×587×128413×13199617
11 Fully factored 22 2611560210…75<22> 3×52×7×311×4549×3516125872…41<13>
12 Fully factored 26 1346421502…29<26> 7×5077×8089×175961341×266172839
13 Fully factored 28 8293339777…29<28> 72×599×911×2473×5273×18301×22063×58907
14 Fully factored 33 7278028350…13<33> 37×59×41069405887<11>×8117860554…53<19>
15 Fully factored 35 6204778442…64<35> 22×33×19×239×293×1516545236…17<13>×2847265930…23<15>
16 Fully factored 41 8568874353…80<41> 24×5×235475729×2267938200…67<15>×2005655881…87<17>
17 Fully factored 46 7144592520…76<46> 22×53×73×8713×1228567471…37<13>×4312727490…71<26>
18 Fully factored 50 3515828679…07<50> 3×47×2493495517…27<48>
19 Fully factored 51 8883335207…69<51> 983×1153×1152351581<10>×6801555139…51<36>
20 Fully factored 54 2760978223…08<54> 24×3×4217×1364011848…13<49>
21 Fully factored 59 1440331572…09<59> 3×7×6397×132684471319<12>×8080658194…03<42>
22 Fully factored 63 1137622762…25<63> 52×1031×44119×104471×58040379367<11>×950497826491<12>×1735788540…51<26>
23 Fully factored 66 8681572507…60<66> 22×5×1629431464…19<28>×2663988237…97<38>
24 Fully factored 70 1716265032…17<70> 13×43×53×67×9358075408…03<29>×9239220531…71<34>
25 Composite 73 3054528943…18<73> 2×1061×1439457560…19<70>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (70 digits) of term #25:
1439457560735553665486063766271062847120117495080144438873980434353619
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 '1385' --type 34 --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":"1385"},"type":34,"part":"last20","fr":0}}'