factordbrpc · fdb
Sign in
Show
Open
Inverse home prime · Base 20 of 610 length 24 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
4 Fully factored 10 1734187342<10> 2×19×5507×8287
5 Fully factored 11 26520603182<11> 2×29×73×431×14533
6 Fully factored 15 3720461797…82<15> 2×1860230898…91<15>
7 Fully factored 16 3720461797…22<16> 2×3×6200769663…37<15>
8 Fully factored 18 2480307865…62<18> 2×1240153932…31<18>
9 Fully factored 19 2480307865…22<19> 2×3×41×193×5224120361…49<14>
10 Fully factored 22 3343437031…62<22> 2×33×118619×5219695038…87<15>
11 Fully factored 26 1336241929…62<26> 2×32×7097749×1045904310…91<18>
12 Fully factored 29 5355030072…62<29> 2×3×139×401×1283×1248029452…21<21>
13 Fully factored 34 1277982159…62<34> 2×17×43×51239×1705991147…59<26>
14 Fully factored 36 4367337336…42<36> 2×2339×13729×122267×26265040007<11>×2117533515…89<13>
15 Fully factored 40 4440789648…82<40> 2×33×682814563×62918415419<11>×1914193734…89<19>
16 Fully factored 45 2007177609…62<45> 2×33×13×827417×2086639×1662130332…29<14>×9963498430…03<16>
17 Fully factored 50 6686390611…62<50> 2×13216433×2529574587…07<43>
18 Fully factored 52 3237855472…62<52> 2×11×83×569×1409×1886513×1172394100…19<37>
19 Fully factored 56 3841700987…22<56> 2×3×7×17×133723×10650131×30232963×1249636132…17<34>
20 Fully factored 60 1310338456…62<60> 2×32×1158683×13380517×4695409268…69<45>
21 Fully factored 63 7692958545…62<63> 2×37×124897×167149×7659788691…29<19>×6501133643…99<32>
22 Fully factored 67 8725673870…42<67> 2×7×131×57143×125471×6635799404…71<54>
23 Composite 70 2718023435…42<70> 2×3×13×15583×2236183938…83<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 #23:
2236183938043770818429502233183289591723897017878342032514119383
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 '610' --type 70 --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":"610"},"type":70,"part":"last20","fr":0}}'