factordbrpc · fdb
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Terminates
Prime-stopping maps · σ(n) − 1 until a prime of 150 length 3 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 3 150 2×3×52
1 Fully factored 3 371 7×53
2 Fully factored 3 431 431
↳ Terminates The sequence reaches a prime and terminates.
From the command linefdb · curl
fdb
fdb seq view '150' --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":"150"},"type":122,"part":"last20","fr":0}}'