factordbrpc · fdb
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Inverse home prime · Base 36 of 986 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 3 986 2×17×29
1 Fully factored 5 38198 2×71×269
2 Fully factored 8 12553022 2×103×60937
3 Fully factored 10 2843080382<10> 2×4157×341963
4 Fully factored 12 574366675862<12> 2×7×41026191133<11>
5 Fully factored 14 5316994370…22<14> 2×13×17×120293990291<12>
6 Fully factored 16 5612436411…98<16> 2×179×197×89653×887641
7 Fully factored 20 9014878691…62<20> 2×2153×170369×122883985183<12>
8 Fully factored 24 3466692280…62<24> 2×31×2243×2492839573…07<19>
9 Fully factored 27 1507324763…78<27> 2×7×317×7687×4418375837…63<19>
10 Fully factored 30 3462423291…26<30> 2×72×139×145289×1749470203…97<21>
11 Fully factored 35 1776761180…26<35> 2×765893×1159927809…91<29>
12 Fully factored 36 7013639910…66<36> 2×331×881×8751124921…39<14>×1374186518…27<17>
13 Fully factored 38 8438800003…50<38> 2×52×47×67×409×1637×10729×27358679×2727166621…89<16>
14 Fully factored 47 3645538492…94<47> 2×19319×20639×13905119×3287635710…93<31>
15 Fully factored 50 1557807169…62<50> 2×13×1031×5726807269<10>×1014773500…33<36>
16 Composite 53 1335662170…38<53> 2×7×337×1423×1989453484…67<46>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (46 digits) of term #16:
1989453484315269918218706746123204772077729467
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 '986' --type 86 --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":"986"},"type":86,"part":"last20","fr":0}}'