factordbrpc · fdb
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Inverse home prime · Base 9 of 925 length 29 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
9 Fully factored 20 1117580221…50<20> 2×53×661×504943×133935247
10 Fully factored 21 3404454299…48<21> 22×7×83×179×4258237×192188999
11 Fully factored 24 3561300968…85<24> 5×1723861×4131772769…97<17>
12 Fully factored 25 1778592696…91<25> 313×78241×387169×187584606983<12>
13 Fully factored 26 3862200709…10<26> 2×5×1163×3320894849…47<22>
14 Fully factored 28 1764859679…77<28> 83×113×33133098851<11>×5679257878…13<13>
15 Fully factored 30 8524261399…24<30> 22×2131065349…81<30>
16 Fully factored 32 1726162933…81<32> 11×61×106759×2409654456…29<24>
17 Fully factored 33 8401945569…80<33> 22×5×503×8351834561…23<29>
18 Fully factored 35 4438507311…55<35> 5×13×108043739×6320100405…73<25>
19 Fully factored 37 1784983028…66<37> 2×2467351×3617205310…33<30>
20 Fully factored 38 1557088278…54<38> 2×1217×611467×184526950373<12>×5669696782…41<17>
21 Fully factored 40 4522515456…52<40> 22×19×3485606161…31<13>×1707214744…67<26>
22 Fully factored 43 2562437744…57<43> 19×761×1772209519…23<39>
23 Fully factored 44 9418247995…03<44> 47×373×1427×3491×5701×1891640349…09<30>
24 Fully factored 46 3154722981…32<46> 22×11×23893×38639×1063181526…49<16>×7304736760…61<20>
25 Fully factored 49 3096562521…05<49> 5×11×17×53×277×109538915869<12>×2059416392…27<31>
26 Fully factored 52 2028053338…63<52> 6841×1113851471<10>×1186338973<10>×2243487747…21<30>
27 Fully factored 54 1610595339…26<54> 2×31×7581671×3426334930…63<45>
28 Composite 56 1075220206…07<56> 61×50075339×3520008275…33<46>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (46 digits) of term #28:
3520008275770498598214230781824520519040820533
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 '925' --type 19 --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":"925"},"type":19,"part":"last20","fr":0}}'