factordbrpc · fdb
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Terminates
Prime-stopping maps · σ(n) − 1 until a prime of 39564 length 5 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 5 39564 22×32×7×157
1 Fully factored 6 115023 3×23×1667
2 Fully factored 6 160127 11×14557
3 Fully factored 6 174695 5×34939
4 Fully factored 6 209639 209639
↳ Terminates The sequence reaches a prime and terminates.
From the command linefdb · curl
fdb
fdb seq view '39564' --type 122 --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":"39564"},"type":122,"part":"last20","fr":0}}'