factordbrpc · fdb
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Inverse home prime · Base 4 of 398 length 66 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
46 Fully factored 61 1912198013…10<61> 2×5×651193×2936453575…07<54>
47 Fully factored 62 1970620636…22<62> 2×1709×5765420235…79<58>
48 Fully factored 62 9446064513…74<62> 2×3394406034…11<16>×1391416409…17<47>
49 Fully factored 63 2506552969…74<63> 2×3×7×461×659×1964451252…53<56>
50 Fully factored 64 5273283677…06<64> 2×3×397×915067×3439256176…79<18>×7034317362…81<37>
51 Fully factored 66 1393290097…34<66> 2×3×7×23×1442329293…49<63>
52 Fully factored 67 2363112315…30<67> 2×3×5×191×1117×27743×1330831728…01<56>
53 Fully factored 69 2341223936…26<69> 2×2765677×4232641658…19<62>
54 Fully factored 69 7101194335…14<69> 2×13×101×306391907×27756867517<11>×3942559746…21<15>×8065116599…61<32>
55 Fully factored 72 1097766786…38<72> 2×17×1246165217…69<20>×2590929193…03<51>
56 Fully factored 73 1223531718…22<73> 2×593707996019<12>×6592917605…63<26>×1562912592…63<35>
57 Fully factored 73 5318315963…58<73> 2×3×11×23628251×2585040579…43<22>×1319262625…91<43>
58 Fully factored 75 1070312998…82<75> 2×17×31×179×4021×718807×36238947707<11>×6135774692…81<14>×8827257687…23<35>
59 Fully factored 76 7689625956…74<76> 2×3×37×85621×126271×3203821599…87<64>
60 Fully factored 78 2254489025…54<78> 2×109×8469407×1126595079…41<16>×1083853983…69<54>
61 Fully factored 79 8385914019…66<79> 2×29×1559×46567×1991581284…59<70>
62 Fully factored 81 1368604237…38<81> 2×3×47×6637×3782123×1933398181…09<68>
63 Fully factored 82 1360508020…98<82> 2×3×17×2322227×3333797044…11<13>×1722888241…17<61>
64 Fully factored 83 3254443874…18<83> 2×83×3424020627…27<23>×5725749262…99<58>
65 Composite 84 4430083917…18<84> 2×3×72×2459×167483×37994351×2567040046…13<14>×3751316332…27<52>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (52 digits) of term #65:
3751316332530168843423230344753780278049306597506527
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 '398' --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":"398"},"type":14,"part":"last20","fr":0}}'