factordbrpc · fdb
Sign in
Show
Open
Inverse home prime · Base 2 of 140 length 86 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
66 Fully factored 45 4765013825…58<45> 2×59×666139×1705862111…27<14>×3553639542…77<24>
67 Fully factored 46 1678158826…26<46> 2×3×1637×3022961520…33<21>×5651978652…01<21>
68 Fully factored 47 1093251667…66<47> 2×13×4943×8506603494…37<41>
69 Fully factored 47 4459910133…62<47> 2×3×941935147997<12>×7891396314…41<34>
70 Fully factored 48 1388269121…22<48> 2×3×14563×1588808534…99<43>
71 Fully factored 48 4164966244…78<48> 2×7×9151×21589×1505852272…43<39>
72 Fully factored 49 2587034504…06<49> 2×33×19×337×7482125000…63<43>
73 Fully factored 50 3138230681…74<50> 2×11×2426650817<10>×5878342618…01<39>
74 Fully factored 51 1615826515…78<51> 2×19×229×1757784023<10>×9666385353…41<17>×1092813457…23<21>
75 Fully factored 52 1108244507…62<52> 2×13×439×2659270075…49<23>×3651197059…17<25>
76 Fully factored 52 4519963031…90<52> 2×5×11×23×569×21773×53307587×422190859×832703237×7694771349…59<16>
77 Fully factored 54 1636496879…10<54> 2×5×173×2647×306198071×3181939776…83<15>×3667927401…57<24>
78 Fully factored 55 3719720297…82<55> 2×15919×23593×1407251×3518923070…23<40>
79 Fully factored 56 1584782062…82<56> 2×13×1319410067<10>×3172130277…57<16>×1456348760…53<30>
80 Fully factored 56 9014362206…82<56> 2×72×317×240011×1208978340…57<47>
81 Fully factored 57 4154017945…74<57> 2×3×43×8425883×502387539527<12>×3803595972…83<36>
82 Fully factored 58 3592394826…98<58> 2×32×19×4987×89959171×2341386680…97<44>
83 Fully factored 59 5272334090…46<59> 2×4463×10301×9556971865…37<14>×1369503299…39<19>×4381100969…47<19>
84 Fully factored 60 7632954407…54<60> 2×61151×6241070798…77<55>
85 Composite 61 1636059263…94<61> 2×7×31×47×8020684691…53<56>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (56 digits) of term #85:
80206846911307373197335081861581316958708132322375998553
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 '140' --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":"140"},"type":12,"part":"last20","fr":0}}'