PRP · Probable prime
Enter a value, an expression, or a term with a variable like 10^n+1 to list a range.
Switch to Database id to look a number up by its stored id.
Reading never stores anything; use Create to add a number to the database.
See the expression syntax & functions reference.
Is factor of
Primality
This is a probable prime: it passes probabilistic tests but is not yet proven.
Build an ECPP certificate (for example with Primo) and upload it - it is stored and verified locally, then the number is promoted to proven prime.
Primo input filedownload .in
From the command linefdb · curl
fdb
fdb number '26883387343270023317726184769070551689538282464474468656857905539477162106828703085620462099449098397066699382981028232753095168745703664053178616891849019017693225481915900645783186723825238494210857623582148344253403848062515987017991191046329666223801276944798106668341663678350526150444442060579105679180097447883531720676070755291880425761593862734824416232660440190435256992198329444813242157482021362868165330603326078355356583045296315344892830648651647519438250642769369986180693664687458231760293813307556747759847572667968256040035694897383789326237699684569519378060170647440544638671308864688660853092483343291356607864944262749846719591907286367404622543005362543826083518785216045742239033157103258947304481242498516451581262923920654337201888012806876452876337171897923900807291041230463688153128162233451805574580925763513028158030399347646226905236102479124784456079040243671352176261873335417' --detail 2
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"expr":"26883387343270023317726184769070551689538282464474468656857905539477162106828703085620462099449098397066699382981028232753095168745703664053178616891849019017693225481915900645783186723825238494210857623582148344253403848062515987017991191046329666223801276944798106668341663678350526150444442060579105679180097447883531720676070755291880425761593862734824416232660440190435256992198329444813242157482021362868165330603326078355356583045296315344892830648651647519438250642769369986180693664687458231760293813307556747759847572667968256040035694897383789326237699684569519378060170647440544638671308864688660853092483343291356607864944262749846719591907286367404622543005362543826083518785216045742239033157103258947304481242498516451581262923920654337201888012806876452876337171897923900807291041230463688153128162233451805574580925763513028158030399347646226905236102479124784456079040243671352176261873335417"},"decimal":false,"detail":2}}'