factordbrpc · fdb
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Inverse home prime · Base 28 of 494 length 19 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 3 494 2×13×19
1 Fully factored 5 15262 2×13×587
2 Fully factored 6 460574 2×421×547
3 Fully factored 8 12019534 2×79×127×599
4 Fully factored 11 10311800550<11> 2×3×52×68745337
5 Fully factored 14 4225473397…38<14> 2×2112736698…19<14>
6 Fully factored 15 5915662756…34<15> 2×349×847516154183<12>
7 Fully factored 17 1860467461…90<17> 2×5×13×332567×430327969
8 Fully factored 19 5806384529…46<19> 2×1106357789<10>×2624098907<10>
9 Fully factored 21 9913898109…46<21> 2×3×1652316351…41<21>
10 Fully factored 24 1295416019…30<24> 2×32×5×19×2767913×2736911267…81<14>
11 Fully factored 28 8106642683…90<28> 2×5×13×17×3754963×9768842222…13<18>
12 Fully factored 32 1033392671…50<32> 2×32×52×11×17×47×585853×4459896097…19<19>
13 Fully factored 38 2899874135…94<38> 2×3×19×1231×1553×847493×18756739×24567617×340712683
14 Fully factored 47 1440446442…90<47> 2×32×5×109×332179×3584149×11075723×1113519413…23<24>
15 Fully factored 52 9769186936…78<52> 2×419×443×2766349×15686214223<11>×6064368231…21<30>
16 Fully factored 56 6786254273…98<56> 2×11×37229749×4967590855…07<13>×1667905804…63<35>
17 Fully factored 59 6665888622…22<59> 2×3×1110981437…37<59>
18 Composite 61 8710094466…94<61> 2×37×1177039792…31<60>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (60 digits) of term #18:
117703979280147443970682074943043374199803785434221048797431
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 '494' --type 78 --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":"494"},"type":78,"part":"last20","fr":0}}'