factordbrpc · fdb
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Home prime · Base 31 of 133 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 3 133 7×19
1 Fully factored 3 236 22×59
2 Fully factored 5 61563 3×20521
3 Fully factored 6 109894 2×23×2389
4 Fully factored 7 2534624 25×103×769
5 Fully factored 13 1762641515…62<13> 2×3×293773585927<12>
6 Fully factored 14 5573169101…92<14> 23×32×7×19×5819934317<10>
7 Fully factored 20 5046377981…95<20> 5×1009275596…59<20>
8 Fully factored 21 1321804874…14<21> 2×6337548323<10>×10428361309<11>
9 Fully factored 22 1688250391…04<22> 22×97×505523×8607245968…21<13>
10 Fully factored 25 1504158635…45<25> 5×29×46819×2215661981…99<18>
11 Fully factored 27 1338827322…62<27> 2×263×797×1373×2326001357…77<18>
12 Fully factored 29 4929070804…12<29> 23×33×89×42937×5971584771…49<20>
13 Fully factored 38 3974843825…80<38> 22×5×112×1642497448…19<35>
14 Fully factored 41 3826108537…90<41> 2×3×5×1680883317…03<14>×7587495807…51<26>
15 Fully factored 44 3734683171…94<44> 2×521×23063×1554068818…89<37>
16 Fully factored 46 1400194915…65<46> 5×7×3463×8317×1406701×190538801×5182222249…29<22>
17 Fully factored 50 8578290686…43<50> 130337×369983×1210931707…61<15>×1469033222…53<26>
18 Fully factored 52 2224751786…84<52> 22×1889×1297426182…43<13>×2269378609…23<36>
19 Composite 56 3130624864…09<56> 773×4049967483…33<53>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (53 digits) of term #19:
40499674830926797924009335097492685253072692002725433
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 '133' --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":"133"},"type":48,"part":"last20","fr":0}}'