factordbrpc · fdb
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Terminates
Conway climb · Base 16 of 1561 length 11 The sequence reaches a prime. ↓ .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 1561 7×223
1 Fully factored 4 2015 5×13×31
2 Fully factored 5 23839 31×769
3 Fully factored 6 127745 5×29×881
4 Fully factored 7 5362545 3×5×357503
5 Fully factored 8 55932031 137×408263
6 Fully factored 9 144063175 52×2143×2689
7 Fully factored 10 1384512129<10> 33×7×112×13×4657
8 Fully factored 12 221109883441<12> 410749×538309
9 Fully factored 12 430702081733<12> 7×11×607×9215047
10 Fully factored 13 8462688623…87<13> 8462688623…87<13>
↳ Terminates The sequence reaches a prime and terminates.
From the command linefdb · curl
fdb
fdb seq view '1561' --type 101 --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":"1561"},"type":101,"part":"last20","fr":0}}'