factordbrpc · fdb
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Conway climb · Base 20 of 15802 length 18 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 5 15802 2×7901
1 Fully factored 5 23901 3×31×257
2 Fully factored 6 492657 3×11×14929
3 Fully factored 8 11374929 32×439×2879
4 Fully factored 10 3971514879<10> 32×53×8326027
5 Fully factored 13 1590600326…27<13> 19×313×267462641
6 Fully factored 14 1012890746…41<14> 3×11×67×4581143131<10>
7 Fully factored 15 7287597811…31<15> 127×251×22861617503<11>
8 Fully factored 16 1306928461…03<16> 373×3503829655…11<13>
9 Fully factored 16 3823023829…11<16> 3×11×1997×54631×1061881
10 Fully factored 18 2918386388…81<18> 3×9421×2758291×3743557
11 Fully factored 21 1002335973…57<21> 29×3456330942…33<19>
12 Fully factored 21 9537283309…33<21> 3×72×143137×4532683952…47<14>
13 Fully factored 23 4400397050…47<23> 37×293×19853×668209×305973671
14 Fully factored 25 9891429798…71<25> 3×165059×4278931×4668349102…33<13>
15 Fully factored 28 6399629110…33<28> 10716491×350814221×1702256540…03<13>
16 Fully factored 30 1404631944…03<30> 11×29×4403234935…37<27>
17 Composite 31 9288726531…37<31> 9288726531…37<31>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (31 digits) of term #17:
9288726531493503252742138735237
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 '15802' --type 105 --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":"15802"},"type":105,"part":"last20","fr":0}}'