factordbrpc · fdb
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Inverse home prime · Base 17 of 707 length 29 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
9 Fully factored 20 3868286889…24<20> 22×19×41×127×839269×116470603
10 Fully factored 25 1153592181…91<25> 7×727953917×2263864226…89<15>
11 Fully factored 26 2684668512…29<26> 32×23×29×131×338669×504011×200002567
12 Fully factored 31 2812652995…88<31> 22×528675113×1330047947…19<22>
13 Fully factored 34 2681368549…24<34> 22×6703421372…81<33>
14 Fully factored 36 1937288776…45<36> 5×1544731666…77<15>×2508252816…37<21>
15 Fully factored 37 2484318575…83<37> 5107×37567×1294896073…07<29>
16 Fully factored 38 9032880917…01<38> 416159×14793101×1467262341…39<26>
17 Fully factored 39 5028586282…03<39> 23×971×200016907×1125724539…13<27>
18 Fully factored 41 6558721495…34<41> 2×13×683×11027×3349405765…49<33>
19 Fully factored 44 3971989172…02<44> 2×3×3631×6216139×1801645112…63<15>×1627948236…51<19>
20 Fully factored 47 3250616857…77<47> 11105797×2926955046…41<40>
21 Fully factored 47 7064957938…26<47> 2×34×11×2696989×1470018179…87<38>
22 Fully factored 52 8564652807…97<52> 114491341×7480611837…17<44>
23 Fully factored 53 3069584334…82<53> 2×13×193×1009×7753×1609098317<10>×4859654366…61<33>
24 Fully factored 57 1161809406…52<57> 22×83×1601×566498081×81392394893<11>×4740489644…67<31>
25 Fully factored 61 1609152911…13<61> 11×41×5179×8514424582…27<17>×2802246945…13<18>×2887441239…47<20>
26 Fully factored 64 5710502480…34<64> 2×13×6596793743<10>×8974417442…43<22>×3709896590…41<31>
27 Fully factored 66 1051796213…38<66> 2×3×29×1254469×351966257×1369056562…39<49>
28 Composite 68 6661992405…71<68> 10853×6138387916…07<64>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (64 digits) of term #28:
6138387916566598550445825014597730395488598559796830021680201107
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 '707' --type 67 --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":"707"},"type":67,"part":"last20","fr":0}}'