factordbrpc · fdb
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Distinct-prime home prime, descending · Base 2 of 370 length 63 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
43 Fully factored 19 9481337770…86<19> 2×11×4309698986…13<18>
44 Fully factored 20 2758207351…78<20> 2×3×11×241313×1731818031…91<13>
45 Fully factored 21 1162203407…42<21> 2×139×585749×713716591561<12>
46 Fully factored 21 7663473548…98<21> 2×3×1277245591…33<21>
47 Fully factored 22 2043592946…42<22> 2×5743×1779203331…97<18>
48 Fully factored 22 5830093475…70<22> 2×5×11×47×3671×679361×452168161
49 Fully factored 23 6363701138…82<23> 2×113×1361×2068917681…87<18>
50 Fully factored 24 2169417426…98<24> 2×1904167×5696499903…97<17>
51 Fully factored 24 4778570466…46<24> 2×132×15331×9221696200…57<17>
52 Fully factored 23 9669649314…70<23> 2×3×5×7×41×79×263×9723283×55591937
53 Fully factored 25 4005821269…22<25> 2×11×53×167×32999×16411921×37985369
54 Fully factored 26 4379414990…94<26> 2×7×1668737579<10>×1874562905…99<16>
55 Fully factored 27 1288189819…22<27> 2×71×157×5778190633…13<22>
56 Fully factored 27 7573590027…06<27> 2×83×42863×277261×3839037502…87<15>
57 Fully factored 28 6753706198…34<28> 2×32×7×11×312×7699×146617993×4491940097<10>
58 Fully factored 27 6473567919…86<27> 2×7×577×1453×904147×6100075358…07<14>
59 Fully factored 28 4292546423…54<28> 2×7507×28163×121438301×83595710147<11>
60 Fully factored 29 1204741149…22<29> 2×1951×2069×1492265122…69<22>
61 Fully factored 29 5007210856…62<29> 2×3×8345351427…77<28>
62 Composite 30 1335256228…46<30> 2×6676281142…23<29>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (29 digits) of term #62:
66762811423337379928874395823
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 '370' --type 130 --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":"370"},"type":130,"part":"last20","fr":0}}'