factordbrpc · fdb
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Inverse home prime · Base 13 of 51 length 25 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
5 Fully factored 11 59982501282<11> 2×3×11×908825777
6 Fully factored 13 1996690233…69<13> 33×83×890981809
7 Fully factored 15 3308153089…37<15> 3×7×11×1069×2087×641909
8 Fully factored 16 6807133663…86<16> 2×421×176303×45855611
9 Fully factored 18 4862758031…61<18> 79×307×12619×1588884223<10>
10 Fully factored 20 1684932175…08<20> 22×7×229×2627779437…09<16>
11 Fully factored 23 1268378943…05<23> 5×109×1063×2189370474…23<17>
12 Fully factored 24 1056767310…40<24> 22×35×5×2089×54419×191273191589<12>
13 Fully factored 30 1272763585…21<30> 337×1187×2311×1376788330…69<21>
14 Fully factored 32 1898019627…56<32> 22×4745049069…89<31>
15 Fully factored 33 8019132927…69<33> 3×853763×3130897344…21<27>
16 Fully factored 35 1964591652…79<35> 32×47×59×397×103511×1915591513…41<23>
17 Fully factored 38 7542404789…09<38> 471253×4321061×53773906499<11>×6888009282…27<15>
18 Fully factored 40 2212317600…84<40> 22×61×698417×8058937×1610887032…59<25>
19 Fully factored 44 1393484283…34<44> 2×23×211×30403×3564619×1324744821…77<29>
20 Fully factored 48 1145959369…39<48> 11×2711711918…99<14>×3841784365…51<33>
21 Fully factored 49 1512655103…37<49> 32×53189×3159916323…37<43>
22 Fully factored 51 1982800631…12<51> 25×3×19×7121×126683693×1129966459<10>×1066416758…19<27>
23 Fully factored 59 2149236354…52<59> 22×32×17627×1746982656…77<25>×1938718164…33<29>
24 Composite 62 5079433145…07<62> 35×23×9088268287…63<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 #24:
9088268287183205414481250858767148735028684278376824852663
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 '51' --type 63 --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":"51"},"type":63,"part":"last20","fr":0}}'