factordbrpc · fdb
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Inverse home prime · Base 2 of 402 length 68 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
48 Fully factored 35 3582590135…46<35> 2×11×19×181×171947×267299×233140807×44190817597<11>
49 Fully factored 36 8547747261…18<36> 2×11×53×239×3067292700…07<31>
50 Fully factored 37 3216289511…14<37> 2×269×79697×938831×7989938997…29<23>
51 Fully factored 38 2248967893…94<38> 2×17×1579×20551×1438763×1416772075…33<23>
52 Fully factored 39 2552229676…94<39> 2×3×263×4113073×425454343×9242583366…57<20>
53 Fully factored 40 1704955699…74<40> 2×33×19×37×971×4625351948…37<32>
54 Fully factored 41 2483216918…14<41> 2×7×28427917013<11>×6239382117…77<29>
55 Fully factored 41 6860273188…98<41> 2×3×1229×4373×736601081×2888194575…29<25>
56 Fully factored 42 8324654088…54<42> 2×17×127×1213×2331013493<10>×6818329268…17<26>
57 Fully factored 43 9826248048…18<43> 2×7342845281<10>×6691035744…39<33>
58 Fully factored 44 2299022375…78<44> 2×3×67×5485087×1042638181…97<35>
59 Fully factored 45 1791238756…10<45> 2×3×5×163×197×1301×3407×3929×6007×1777416883…07<25>
60 Fully factored 46 4196806957…50<46> 2×3×52×233×26261×429109×1065596855…53<32>
61 Fully factored 47 4799021599…26<47> 2×13249693×1810993507…91<40>
62 Fully factored 48 1215337169…98<48> 2×67×577×41044682953<11>×2123945039…63<15>×1803084123…99<18>
63 Fully factored 49 1828544536…34<49> 2×197×313×3727×70981×5604843325…81<35>
64 Fully factored 50 1577623144…02<50> 2×29×60257×3267842443<10>×143832627977<12>×9603935726…97<22>
65 Fully factored 50 9511277256…18<50> 2×34×5871158800…39<48>
66 Fully factored 51 6012066611…58<51> 2×43×3231031380…77<24>×2163635788…89<26>
67 Composite 52 3348064216…78<52> 2×7×11×181×1201142360…47<48>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (48 digits) of term #67:
120114236082841380841824554749365812430542626247
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 '402' --type 12 --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":"402"},"type":12,"part":"last20","fr":0}}'