factordbrpc · fdb
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Inverse home prime · Base 33 of 841 length 17 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
0 Fully factored 3 841 292
1 Fully factored 3 986 2×17×29
2 Fully factored 5 32144 24×72×41
3 Fully factored 11 53232510047<11> 59×902245933
4 Fully factored 12 982545821096<12> 23×7×106993×163987
5 Fully factored 18 2306328569…25<18> 52×61×83×167039×10908257
6 Fully factored 23 1670685740…26<23> 2×41×2037421634…93<21>
7 Fully factored 25 7321882127…96<25> 24×2145426643<10>×2132991283…67<15>
8 Fully factored 32 1078058726…62<32> 2×161932378063<12>×3328731225…37<20>
9 Fully factored 34 1544913573…42<34> 2×2192783×323646287×1088448558…51<19>
10 Fully factored 37 1815411938…55<37> 5×19×29×10259×6423157246…39<29>
11 Fully factored 38 8295301844…87<38> 1933×211493×2979329×3580397×1902193499…71<17>
12 Fully factored 43 1241628495…07<43> 7×13×532×1739242990…11<17>×2792789982…23<21>
13 Fully factored 47 1822952094…04<47> 23×7×9413×17225773×559328659×9689423083<10>×3704379384…03<15>
14 Fully factored 53 3400665813…24<53> 22×7×13×192×2111539×66386460559<11>×1846191504…31<31>
15 Fully factored 60 1312325615…39<60> 37×1201×4259×14699×4717386332…67<47>
16 Composite 64 2384266424…11<64> 7×3406094892…73<63>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (63 digits) of term #16:
340609489258368609808060595102608916414608048971426081655261273
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 '841' --type 83 --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":"841"},"type":83,"part":"last20","fr":0}}'