factordbrpc · fdb
Sign in
Show
Open
Inverse home prime · Base 2 of 2864 length 87 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
67 Fully factored 50 1261362606…58<50> 2×32×4025677531…29<14>×3550449693…77<16>×4902810411…07<19>
68 Fully factored 50 9944080897…22<50> 2×17134027×46453494361<11>×6246788724…13<32>
69 Fully factored 51 5761645644…22<51> 2×3×79×4000532063…27<22>×3038438479…89<27>
70 Fully factored 52 2938597382…86<52> 2×37×79×6293917305…81<18>×7986568923…61<30>
71 Fully factored 53 3017240431…30<53> 2×5×32089×9402725020…07<47>
72 Fully factored 53 9859471790…02<53> 2×4929735895…51<53>
73 Fully factored 54 1971894358…06<54> 2×11×13×1900721519<10>×1477615186…67<13>×2454922427…77<30>
74 Fully factored 55 1187127643…26<55> 2×3×11×173×391451×2656011630…57<45>
75 Fully factored 55 9125986473…90<55> 2×3×5×7×53×102013×1130963×1772959×4008501471…03<34>
76 Fully factored 57 1514369039…86<57> 2×3×47×5370102976…23<54>
77 Fully factored 57 5498985448…18<57> 2×3×3568939160…39<13>×3503112835…13<15>×7330575131…79<29>
78 Fully factored 58 2903939989…42<58> 2×3×72×6054229×2148559137…79<15>×7593362813…23<34>
79 Fully factored 59 1835962472…82<59> 2×23×83×1613643648…01<18>×1468133846…17<19>×2029806281…47<20>
80 Fully factored 60 2210263314…58<60> 2×3×137447699×2680126490…07<51>
81 Fully factored 61 1151105562…70<61> 2×5×13×113497×6101551×36329789×9544903982…77<13>×3687336164…69<26>
82 Fully factored 62 2450655229…42<62> 2×3580356095…99<14>×7240501024…67<19>×4726692818…87<29>
83 Fully factored 63 1227119613…26<63> 2×3×6737×129693661×2397780594…19<21>×9762047335…87<29>
84 Fully factored 63 5068744771…54<63> 2×32×211×1124525097…01<13>×1186796646…73<48>
85 Fully factored 64 4275885547…14<64> 2×32×11×10508633×2055013392…21<55>
86 Composite 65 3530486125…22<65> 2×13×23×59×251×3986645251…21<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 #86:
3986645251558239245774296494014320003363455616684822202821
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 '2864' --type 12 --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":"2864"},"type":12,"part":"last20","fr":0}}'