factordbrpc · fdb
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Home prime · Base 21 of 1057 length 19 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 4 1057 7×151
1 Fully factored 4 3238 2×1619
2 Fully factored 5 20141 11×1831
3 Fully factored 6 103702 2×19×2729
4 Fully factored 6 567650 2×52×11353
5 Fully factored 9 192936505 5×38587301
6 Fully factored 9 467417906 2×1987×117619
7 Fully factored 10 3988728448<10> 27×23×1021×1327
8 Fully factored 19 6812231856…85<19> 5×14321×724781×131262077
9 Fully factored 22 7258187562…64<22> 22×463×2137×1833929693…61<16>
10 Fully factored 26 2779031122…25<26> 53×41×2281×2377246712…01<19>
11 Fully factored 29 3067150884…58<29> 2×54623974487<11>×2807513471…67<18>
12 Fully factored 31 5330357549…36<31> 22×13×16943×6050101868…01<25>
13 Fully factored 34 2414480755…41<34> 13×338553384311<12>×5485967574…87<21>
14 Fully factored 35 1525586202…31<35> 101×131×1123×867402113×1183706005…99<19>
15 Fully factored 37 2417128001…67<37> 13×383×203620289×57887461579<11>×4118622313…83<14>
16 Fully factored 40 3064759940…87<40> 13×3019883×7806619153…53<32>
17 Fully factored 41 6375986283…49<41> 17×37×31424399×73470333067<11>×4390537992…57<20>
18 Composite 44 3496435959…77<44> 3496435959…77<44>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (44 digits) of term #18:
34964359595828697868969174628989484834238677
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 '1057' --type 38 --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":"1057"},"type":38,"part":"last20","fr":0}}'