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 '12421973754007249659007650856631261911248203579341366826819140765294995339935083025596323430596735274620977804096298242968354235570138095356206343406780030087636652385508175227538698449799695325436783939591045777780918224343334504646265983639405288277452346971933786772617903021465713967994835411558912827750498588956959740555164760173177663063904941762448773144217481986842928417945001739381347891538428435516630988517571496495080197142935641292979428733599750642193086245506358156436286576454750680316096877444797858298532306802053828507878996248541459336578136420597378563967423123836164668254960858765040786290392161165028936419001232739344809132915638045209642332562899682389109866354618896357098934131748820955480586090510599789' --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":"12421973754007249659007650856631261911248203579341366826819140765294995339935083025596323430596735274620977804096298242968354235570138095356206343406780030087636652385508175227538698449799695325436783939591045777780918224343334504646265983639405288277452346971933786772617903021465713967994835411558912827750498588956959740555164760173177663063904941762448773144217481986842928417945001739381347891538428435516630988517571496495080197142935641292979428733599750642193086245506358156436286576454750680316096877444797858298532306802053828507878996248541459336578136420597378563967423123836164668254960858765040786290392161165028936419001232739344809132915638045209642332562899682389109866354618896357098934131748820955480586090510599789"},"decimal":false,"detail":2}}'