factordbrpc · fdb
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Inverse home prime · Base 31 of 169 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 3 169 132
1 Fully factored 3 416 25×13
2 Fully factored 9 374087573 43×1493×5827
3 Fully factored 12 166823497693<12> 157×1229×864581
4 Fully factored 14 2475222118…57<14> 53×612×125510089
5 Fully factored 18 1113906660…64<18> 23×941×1029839×14368117
6 Fully factored 23 1177651515…23<23> 13×263×647×8153737×652915103
7 Fully factored 24 5351476876…33<24> 120709×4433370234…37<19>
8 Fully factored 25 4094310512…86<25> 2×3×17×19×269×7853707521…63<19>
9 Fully factored 28 6970194334…13<28> 95403179×95818969×762483669763<12>
10 Fully factored 30 6005800099…11<30> 17×3532823587…83<29>
11 Fully factored 31 1095175312…90<31> 2×5×1251339243…27<14>×8752025623…87<16>
12 Fully factored 33 2223756408…01<33> 3×292×47×33739×58427×111539×298651×28558513
13 Fully factored 39 5947455018…67<39> 7×17×73×103×6646976140…47<33>
14 Fully factored 42 5899215791…57<42> 263×2861×24038929×1241512662…61<14>×2626965736…71<16>
15 Fully factored 44 5692808713…65<44> 5×41×1664711×974728751×1711394391…93<27>
16 Composite 49 4015831777…11<49> 3×17×253642469×3104440666…69<39>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (39 digits) of term #16:
310444066682090028568511509230295754869
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 '169' --type 81 --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":"169"},"type":81,"part":"last20","fr":0}}'