factordbrpc · fdb
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Home prime · Base 23 of 951 length 22 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
2 Fully factored 8 13457938 2×13×517613
3 Fully factored 9 380261850 2×3×52×67×157×241
4 Fully factored 13 3855021418…90<13> 2×5×17×192×62816057
5 Fully factored 14 9325763966…31<14> 47×127×20632×3671
6 Fully factored 17 4501111043…69<17> 17×21586897×122653681
7 Fully factored 18 3757442509…71<18> 347×1082836458…93<16>
8 Fully factored 19 7605457514…80<19> 22×5×29×61×9833×21861576497<11>
9 Fully factored 24 2957131520…87<24> 487×1095239×5544122010…59<15>
10 Fully factored 25 2987624827…19<25> 3×83×18919×5026187×126179816927<12>
11 Fully factored 28 5417951353…09<28> 3×73421×27444149×8962801593…07<15>
12 Fully factored 30 1287708134…62<30> 2×172×2227868745…79<27>
13 Fully factored 31 2516107235…45<31> 5×29×89×6977147×2794430190…87<20>
14 Fully factored 35 5583788626…21<35> 13×257×5693×17714548609<11>×1657224022…13<18>
15 Fully factored 37 3426333671…93<37> 37×1907×12659×5681826209<10>×6751338626…17<18>
16 Fully factored 42 1148536596…63<42> 3×3828455323…21<41>
17 Fully factored 42 2515675996…68<42> 23×7×11×1253059776…51<14>×3259133907…73<26>
18 Fully factored 46 1809030641…08<46> 24×523×9083453×53146325261<11>×4478164440…57<24>
19 Fully factored 51 5061513632…26<51> 2×134591×1880331386…43<46>
20 Fully factored 53 1381264212…00<53> 22×53×17×29×89×1181916430…37<13>×5327004446…39<33>
21 Composite 59 7513844385…20<59> 24×5×9392305482…99<57>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (57 digits) of term #21:
939230548214880696019760034959782204223501406597193188799
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 '951' --type 40 --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":"951"},"type":40,"part":"last20","fr":0}}'