factordbrpc · fdb
Sign in
Show
Open
Inverse home prime · Base 4 of 1618 length 52 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
32 Fully factored 33 2617401303…90<33> 2×5×31×87405107×9659881785…67<22>
33 Fully factored 35 1062115234…70<35> 2×3×5×421×10039×90989×9464417×9727361915…87<14>
34 Fully factored 37 1837446715…46<37> 2×72×17×8467×1302597369…93<30>
35 Fully factored 39 1398653275…30<39> 2×3×5×11981×99923×3894307843…67<28>
36 Fully factored 40 4281836756…14<40> 2×32×2378798198…23<39>
37 Fully factored 41 1522430846…34<41> 2×72×19×613×61926212093<11>×325559615257<12>×661595254189<12>
38 Fully factored 43 3354686484…38<43> 2×17×229×2540161583<10>×1696196630…01<30>
39 Fully factored 44 4774369069…38<44> 2×3×223×113611021×3140793704…31<33>
40 Fully factored 45 3453339198…54<45> 2×11×89×24382927×4500765948…31<17>×1607142120…49<18>
41 Fully factored 47 1273309170…30<47> 2×3×5×172×1468638028…89<43>
42 Fully factored 49 1539978589…38<49> 2×32×19×269×1673926160…81<44>
43 Fully factored 50 7020955192…26<50> 2×3×427839343×2735043464…47<41>
44 Fully factored 51 4698768892…50<51> 2×52×66749×43696769×3221958862…67<37>
45 Fully factored 53 5804165092…10<53> 2×5×31×26513×1442241930…07<15>×6781393975…03<15>×7220413963…77<17>
46 Fully factored 55 6142448884…82<55> 2×13×787×2903×158551×5245744694…91<21>×1243283870…07<22>
47 Fully factored 57 1032879829…62<57> 2×3×112×43×71×8790087367<10>×5301431810…87<40>
48 Fully factored 58 6112134739…58<58> 2×3×673×12119×1989563×7269529×8635666267…57<37>
49 Fully factored 60 1631231237…90<60> 2×5×167×2072750181…19<16>×4712507956…63<41>
50 Fully factored 61 3477217128…38<61> 2×3×43×1511×50159×2185658422…33<24>×8136103779…83<27>
51 Composite 62 6759210574…42<62> 2×11×43×59×1211024218…53<58>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (58 digits) of term #51:
1211024218825568922101765370731557214467263119024901128053
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 '1618' --type 14 --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":"1618"},"type":14,"part":"last20","fr":0}}'