factordbrpc · fdb
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Conway climb · Base 19 of 4439 length 16 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 4439 23×193
1 Fully factored 4 8496 24×32×59
2 Fully factored 7 5494840 23×5×13×10567
3 Fully factored 10 1942966356<10> 22×3×161913863
4 Fully factored 12 682186050720<12> 25×32×5×473740313
5 Fully factored 15 2646428224…70<15> 2×5×1709×15485244143<11>
6 Fully factored 16 5038121527…29<16> 9007×218591×2558917
7 Fully factored 19 1049238045…21<19> 7×29×5168660323…07<16>
8 Fully factored 21 1074925943…11<21> 11×53×59×2131×674239×2175007
9 Fully factored 23 6109134936…56<23> 27×3×7×15923×89983×15862260943<11>
10 Fully factored 25 4704226258…78<25> 2×2352113129…39<25>
11 Fully factored 26 7753206004…41<26> 33×43×47×11447×1241250861…09<18>
12 Fully factored 30 8158200970…26<30> 2×23×167×190271×1002523×5567409306…21<15>
13 Fully factored 34 3651845613…25<34> 54×12973×21401×10332011×2036915657…07<16>
14 Fully factored 36 1752529339…91<36> 3×11×311×9157×1864823589…01<28>
15 Composite 38 4396210778…57<38> 7841×5606696567…77<34>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (34 digits) of term #15:
5606696567038428424415917505748677
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 '4439' --type 104 --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":"4439"},"type":104,"part":"last20","fr":0}}'