factordbrpc · fdb
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Home prime · Base 19 of 294 length 21 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
1 Fully factored 5 14941 67×223
2 Fully factored 5 24410 2×5×2441
3 Fully factored 6 297378 2×33×5507
4 Fully factored 9 101937106 2×972×5417
5 Fully factored 10 2028595821<10> 3×7×43×607×3701
6 Fully factored 13 1088975174…21<13> 172×3768080189<10>
7 Fully factored 13 5778179514…29<13> 3×11×673×260172881
8 Fully factored 15 4175143413…96<15> 24×6079×4292588639<10>
9 Fully factored 19 1686882196…98<19> 2×277×3044913711…87<16>
10 Fully factored 20 4201397539…28<20> 24×4019×178259×3665256073<10>
11 Fully factored 25 4176800682…93<25> 103758647×4025496479…19<17>
12 Fully factored 25 4363360706…92<25> 23×23×227×277×6961×5417838229…77<14>
13 Fully factored 30 5442743876…07<30> 244945969×2222018144…03<22>
14 Fully factored 31 1342398671…94<31> 2×34×281×2179×6491×138889×1501147920…87<14>
15 Fully factored 37 1383228316…33<37> 312553×822310871411<12>×5381881946…51<19>
16 Fully factored 38 2909135044…87<38> 17×211×617×172153×7635416743…01<26>
17 Fully factored 41 7700120128…77<41> 5491781989…07<16>×1402116861…11<26>
18 Fully factored 42 2064359392…18<42> 2×32×311×1058303×3484515382…97<32>
19 Fully factored 44 6513296078…07<44> 11×103×5748716750…79<41>
20 Composite 45 3390079686…93<45> 37×41×941×8429×2817465771…61<35>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (35 digits) of term #20:
28174657718391835768025239374193961
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 '294' --type 36 --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":"294"},"type":36,"part":"last20","fr":0}}'