factordbrpc · fdb
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Terminates
Mid-divisor concatenation · Base 10 of 1240 length 7 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 1240 23×5×31
1 Fully factored 4 3140 22×5×157
2 Fully factored 5 20157 3×6719
3 Fully factored 5 36719 73×503
4 Fully factored 5 73503 32×8167
5 Fully factored 5 98167 89×1103
6 Fully factored 6 891103 891103
↳ Terminates The sequence reaches a prime and terminates.
From the command linefdb · curl
fdb
fdb seq view '1240' --type 143 --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":"1240"},"type":143,"part":"last20","fr":0}}'