factordbrpc · fdb
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Conway climb · Base 14 of 749 length 20 Not fully computed yet - the last known term is composite. ↓ .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 3 749 7×107
1 Fully factored 4 1479 3×17×29
2 Fully factored 6 118609 17×6977
3 Fully factored 6 660049 13×50773
4 Fully factored 7 7042485 3×5×23×137×149
5 Fully factored 9 354798761 19×73×255803
6 Fully factored 10 2042373531<10> 3×11×5711×10837
7 Fully factored 11 78436224581<11> 112×13×233×214009
8 Fully factored 13 3242434083…33<13> 3×172×283×13214953
9 Fully factored 16 2450595282…57<16> 3×19×73×577×1020699881<10>
10 Fully factored 18 4820813381…73<18> 17×601×4718423589…69<14>
11 Fully factored 19 2678777850…73<19> 4493×16097329×37037909
12 Fully factored 20 4992794354…13<20> 3×1664264784…71<20>
13 Fully factored 21 1081166880…83<21> 17923×147551×40882728371<11>
14 Fully factored 22 2788289656…99<22> 3×9294298855…33<21>
15 Fully factored 23 1885834176…85<23> 5×37×73×5203243×268370518259<12>
16 Fully factored 24 4342962903…07<24> 11×523×797×9471819740…27<17>
17 Fully factored 26 1310829305…47<26> 13×113×463×280697×6866028224…33<14>
18 Fully factored 28 3117175055…33<28> 3×13×31107482999<11>×2569399958…53<16>
19 Composite 30 1771266500…17<30> 31×5713762906…07<28>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (28 digits) of term #19:
5713762906012552866537945307
Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:
level 0 done · takes up to a minute
From the command linefdb · curl
fdb
fdb seq view '749' --type 99 --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":"749"},"type":99,"part":"last20","fr":0}}'