factordbrpc · fdb
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Terminates
Aliquot of 642 length 31 The sequence reaches 1. ↓ .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
11 Fully factored 4 7802 2×47×83
12 Fully factored 4 4294 2×19×113
13 Fully factored 4 2546 2×19×67
14 Fully factored 4 1534 2×13×59
15 Fully factored 3 986 2×17×29
↳ Merges Joins the aliquot sequence of 560 (at index 3 of that sequence) - the terms below continue there.
16 Fully factored 3 634 2×317
↳ Drops below start Descends to 320 and continues as that sequence.
17 Fully factored 3 320 26×5
18 Fully factored 3 442 2×13×17
↳ Drops below start Descends to 314 and continues as that sequence.
19 Fully factored 3 314 2×157
↳ Drops below start Descends to 160 and continues as that sequence.
20 Fully factored 3 160 25×5
21 Fully factored 3 218 2×109
↳ Drops below start Descends to 112 and continues as that sequence.
22 Fully factored 3 112 24×7
↳ Merges Joins the aliquot sequence of 60 (at index 3 of that sequence) - the terms below continue there.
23 Fully factored 3 136 23×17
24 Fully factored 3 134 2×67
25 Fully factored 2 70 2×5×7
26 Fully factored 2 74 2×37
↳ Drops below start Descends to 40 and continues as that sequence.
27 Fully factored 2 40 23×5
28 Fully factored 2 50 2×52
29 Fully factored 2 43 43
30 unit 1 1 -
31 terminus 1 0 -
↳ Terminates The sequence reaches 1 and terminates.
From the command linefdb · curl
fdb
fdb seq view '642' --type 1 --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":"642"},"type":1,"part":"last20","fr":0}}'