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 '71478016611478939429534394107639220591047375335061264198074185991387210100111234585858392235221774023994705053434373437221707239098095191144551311269349490123847610532960046536450654292170874873622832512845753619451328446448400133126642867797874282024603915773762107934398753278541305415640347194828237861026835778345081895588915353631232571803863055967990079091938532213907940634430874376038918423180997549642789440753116418472363121630441074595346091644705942271021131833357615622208523949553816874368562383753690849007834170073381442354553221810846260752622455604715579083551127686090808336574446151715161859346743368608238781791375944855789081047569810084672200583039503079800593461159200033273228842316307413804223278666122490311699492468578352844185821884508275986773158076327341125779464039549824985019593870349002944191635348642722152201972948485235481781943772272717275144634559881041778888708391102302737428346982910551537164158930834015900112869901647637164707799003850840369502301930215574088569070156762070366011341650578160162655061676734360092630724682926113084334224749876431' --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":"71478016611478939429534394107639220591047375335061264198074185991387210100111234585858392235221774023994705053434373437221707239098095191144551311269349490123847610532960046536450654292170874873622832512845753619451328446448400133126642867797874282024603915773762107934398753278541305415640347194828237861026835778345081895588915353631232571803863055967990079091938532213907940634430874376038918423180997549642789440753116418472363121630441074595346091644705942271021131833357615622208523949553816874368562383753690849007834170073381442354553221810846260752622455604715579083551127686090808336574446151715161859346743368608238781791375944855789081047569810084672200583039503079800593461159200033273228842316307413804223278666122490311699492468578352844185821884508275986773158076327341125779464039549824985019593870349002944191635348642722152201972948485235481781943772272717275144634559881041778888708391102302737428346982910551537164158930834015900112869901647637164707799003850840369502301930215574088569070156762070366011341650578160162655061676734360092630724682926113084334224749876431"},"decimal":false,"detail":2}}'