factordbrpc · fdb
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Conway climb · Base 15 of 15793 length 22 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
2 Fully factored 6 122411 167×733
3 Fully factored 6 564358 2×181×1559
4 Fully factored 7 2131184 24×11×12109
5 Fully factored 8 26387734 2×37×356591
6 Fully factored 9 370172216 23×3163×14629
7 Fully factored 10 5798500879<10> 17×107×1447×2203
8 Fully factored 11 44792823328<11> 25×11×127252339
9 Fully factored 11 91707877339<11> 13×7054452103<10>
10 Fully factored 12 506818123978<12> 2×41×4079×1515251
11 Fully factored 15 2831818056…01<15> 11×41×627897573551<12>
12 Fully factored 17 2176341363…51<17> 35220943×617911157
13 Fully factored 17 9026742523…32<17> 22×7829×2882469831…77<13>
14 Fully factored 20 1408032631…52<20> 23×107×1644897933…67<17>
15 Fully factored 21 2198975678…67<21> 132×127×1021×1117×5641×1592557
16 Fully factored 24 2919808759…82<24> 2×131×19763×5638975986…97<17>
17 Fully factored 26 1288848188…97<26> 41×409×8447×345133×263636550263<12>
18 Fully factored 28 3076619899…13<28> 7×167×2631839092…77<25>
19 Fully factored 28 8691527674…27<28> 11×7901388795…57<27>
20 Fully factored 29 1313515448…82<29> 2×109×9643×17611807×3547828410…49<15>
21 Composite 31 9413475296…24<31> 26×7×2101222164…63<29>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (29 digits) of term #21:
21012221644912076115060815563
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 '15793' --type 100 --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":"15793"},"type":100,"part":"last20","fr":0}}'