factordbrpc · fdb
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Terminates
Aliquot variants · Quasi · σ(n) − n − 1 of 4700 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 4700 22×52×47
1 Fully factored 4 5715 32×5×127
↳ Continues Reaches 4268 and continues as that sequence.
2 Fully factored 4 4268 22×11×97
↳ Continues Reaches 3963 and continues as that sequence.
3 Fully factored 4 3963 3×1321
↳ Continues Reaches 1324 and continues as that sequence.
4 Fully factored 4 1324 22×331
↳ Continues Reaches 999 and continues as that sequence.
5 Fully factored 3 999 33×37
↳ Continues Reaches 520 and continues as that sequence.
6 Fully factored 3 520 23×5×13
7 Fully factored 3 739 739
8 terminus 1 0 -
↳ Terminates The sequence reaches a prime and terminates.
From the command linefdb · curl
fdb
fdb seq view '4700' --type 55 --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":"4700"},"type":55,"part":"last20","fr":0}}'