factordbrpc · fdb
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Conway climb · Base 28 of 49 length 22 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
2 Fully factored 5 46323 32×5147
3 Fully factored 7 1893019 47×40277
4 Fully factored 8 28929109 11×283×9293
5 Fully factored 9 195535757 227×861391
6 Fully factored 10 3907614927<10> 3×103×12646003
7 Fully factored 11 42264099443<11> 23×3797×483953
8 Fully factored 12 312671688561<12> 32×34741298729<11>
9 Fully factored 14 3252571315…25<14> 54×109×477441661
10 Fully factored 14 5445649124…81<14> 41×5657×234790013
11 Fully factored 15 4364429823…69<15> 3×29×47×296801×359621
12 Fully factored 18 7052624406…13<18> 47×1847×2803253×2898169
13 Fully factored 21 3061463605…57<21> 14904343×2054074846…99<14>
14 Fully factored 22 4414618226…31<22> 113×347×733×1535964786…37<15>
15 Fully factored 23 2065347754…53<23> 47×137×139×3517×21739×301820011
16 Fully factored 25 6733488862…67<25> 11×5059×396103×731233×417752317
17 Fully factored 28 1256733357…57<28> 34×17×9126603903…41<24>
18 Fully factored 28 9916382482…69<28> 112×223×1997×1840284512…19<21>
19 Fully factored 32 2722204733…55<32> 3×5×65183×2784166356…79<26>
20 Fully factored 34 6128918885…67<34> 3×11×47×3951591802…17<31>
21 Composite 37 5126142370…85<37> 5×373×691×3977716074…19<31>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (31 digits) of term #21:
3977716074195960864932629303819
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 '49' --type 113 --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":"49"},"type":113,"part":"last20","fr":0}}'