factordbrpc · fdb
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Home prime · Base 31 of 51 length 16 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 2 51 3×17
1 Fully factored 3 110 2×5×11
2 Fully factored 4 2088 23×32×29
3 Fully factored 8 59167931 6221×9511
4 Fully factored 9 185339322 2×32×7×1470947
5 Fully factored 13 1791184303…62<13> 2×743×1205373017<10>
6 Fully factored 14 7332232197…32<14> 24×3×3251×4349×108041
7 Fully factored 22 1564351653…42<22> 2×11×15667×87541×51845892863<11>
8 Fully factored 25 1725304512…54<25> 2×36383×49421927×479752869847<12>
9 Fully factored 28 1425647173…79<28> 15173×16498135103<11>×5695157562…41<13>
10 Fully factored 29 1103762723…67<29> 173×1693×3768535940…03<23>
11 Fully factored 31 3750256129…19<31> 7×1511×7177×16204729×3048693090…59<16>
12 Fully factored 34 4551884479…03<34> 139×11311×51177487×334872149×168934146989<12>
13 Fully factored 37 2789448979…85<37> 5×19×37×7935843470…19<33>
14 Fully factored 40 3347247179…60<40> 22×3×5×53×109×2891899×26257117×1271756616…71<21>
15 Composite 47 3529576745…21<47> 3×1176525581…07<47>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (47 digits) of term #15:
11765255817722874466711048040648413792476994807
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 '51' --type 48 --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":"51"},"type":48,"part":"last20","fr":0}}'