factordbrpc · fdb
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Terminates
Mid-divisor concatenation · Base 10 of 2090 length 8 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 2090 2×5×11×19
1 Fully factored 4 3855 3×5×257
2 Fully factored 5 15257 11×19×73
3 Fully factored 5 73209 3×23×1061
4 Fully factored 6 691061 7×269×367
5 Fully factored 7 3671883 32×19×109×197
6 Fully factored 8 17732071 73×17×3041
7 Fully factored 8 30415831 30415831
↳ Terminates The sequence reaches a prime and terminates.
From the command linefdb · curl
fdb
fdb seq view '2090' --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":"2090"},"type":143,"part":"last20","fr":0}}'