factordbrpc · fdb
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Inverse home prime · Base 23 of 507 length 17 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 3 507 3×132
1 Fully factored 4 7179 3×2393
2 Fully factored 5 55042 2×13×29×73
3 Fully factored 8 20444035 5×31×41×3217
4 Fully factored 11 20706214996<11> 22×107×48379007
5 Fully factored 14 1353842975…38<14> 2×134×237009029
6 Fully factored 16 1525471408…29<16> 32×13033×13005203957<11>
7 Fully factored 19 1925236929…02<19> 2×3×214811×1493744834…47<13>
8 Fully factored 21 2211278444…73<21> 3×17×163×15733×1690729418…37<13>
9 Fully factored 24 1324026865…71<24> 11×13×197×65520359×71732879639<11>
10 Fully factored 25 2971642942…53<25> 17×47×101×401×10273×8938956252…39<13>
11 Fully factored 27 3703097714…50<27> 2×53×192×544028869×7542164755…07<13>
12 Fully factored 31 3801525284…15<31> 5×11×97×607×7017310819<10>×1672877173…73<15>
13 Fully factored 35 4460479991…62<35> 2×17×181×7248098784…53<31>
14 Fully factored 37 2028315211…15<37> 3×5×19×7639×9316527660…01<30>
15 Fully factored 39 1379180454…71<39> 1871×699767×4838221019<10>×2177249224…37<20>
16 Composite 42 1335222127…56<42> 22×3×7×36383×4368936457…73<35>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (35 digits) of term #16:
43689364576640330577157024250712473
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 '507' --type 73 --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":"507"},"type":73,"part":"last20","fr":0}}'