factordbrpc · fdb
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Inverse home prime · Base 29 of 395 length 20 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 3 395 5×79
1 Fully factored 4 2296 23×7×41
2 Fully factored 8 29170986 2×3×13×373987
3 Fully factored 10 9121179965<10> 5×11839×154087
4 Fully factored 12 108983150783<12> 13×4973×1685767
5 Fully factored 13 1192311113…57<13> 3×29167×13626257
6 Fully factored 15 2794901884…39<15> 3×46399×2007875087<10>
7 Fully factored 17 4118382508…37<17> 3×7×107×276323×66329477
8 Fully factored 20 3318108313…53<20> 7×4740154734…79<19>
9 Fully factored 21 1374644872…98<21> 2×1289×6449×8268280977…09<13>
10 Fully factored 24 1426268241…33<24> 359×7254983×5476087314…89<14>
11 Fully factored 24 9446182883…63<24> 3×19×472639×3506323149…81<17>
12 Fully factored 26 2085642780…54<26> 2×18253×4813998191<10>×118677873049<12>
13 Fully factored 28 1447930549…31<28> 232×911×12343×2434181476…43<18>
14 Fully factored 30 1217690551…71<30> 23×5813×15767×5776432592…87<20>
15 Fully factored 30 9964274772…10<30> 2×5×17×23×89×401179×2460866141<10>×2900365621<10>
16 Fully factored 35 2104838180…89<35> 11×607×3152371095…57<31>
17 Fully factored 35 7688317864…87<35> 13×14484209×566486981×7207808869…31<18>
18 Fully factored 36 2550229332…46<36> 2×3×7×73×83829569×4268785061<10>×2324371623…59<15>
19 Composite 41 4891809397…22<41> 2×7×17×433×487×9747106523…39<33>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (33 digits) of term #19:
974710652372069716387914806602739
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 '395' --type 79 --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":"395"},"type":79,"part":"last20","fr":0}}'