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 '291000747349427144716122856059110868850753761148596339571502509665555715568420859687510770320157111861222306480324597960692467813163545072242163601006158053350489768617113739394962246123938466990672390731395516674994307205150928503702172138709363965168743572190041834139545786751436527676729175856569275346881381018926147792340875544024328976726738586887442811168369574616186829986902916985914268867314770401969451163970582030645851146939719124224494336399272139750427332712491919965822536502870576963124913911212183423199433572340264419287746255874245769592116406048296138822724222099316422759551869157625263763728128632829919364266043876261212412559740939294152318152681991017576789058242710567564568859650652014630477367983118979148773697196965466900927250504500765064609067863997019782278213525481673104850771390345854577196179152346902918084165459334395592604705097493691402373633567556978203752290165207454456849536041519293795857041993511173765554324448618393655433030549284122362405549384607052435061010927340184434570257127252703674886580409793898789754980925303576768071289410955815229411154637086694753187804778718607619181352481968250757300586664778012270359537215273385447231681839398840354941253591841726667244497193130134073198860878365463926056249764563437282717357918713532754215562791950432878007023326528098160027266805506270102826158565082628760003297860525056150578847385345865860050654143252685562959280014438793552399123517061798680263216362696622925877' --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":"291000747349427144716122856059110868850753761148596339571502509665555715568420859687510770320157111861222306480324597960692467813163545072242163601006158053350489768617113739394962246123938466990672390731395516674994307205150928503702172138709363965168743572190041834139545786751436527676729175856569275346881381018926147792340875544024328976726738586887442811168369574616186829986902916985914268867314770401969451163970582030645851146939719124224494336399272139750427332712491919965822536502870576963124913911212183423199433572340264419287746255874245769592116406048296138822724222099316422759551869157625263763728128632829919364266043876261212412559740939294152318152681991017576789058242710567564568859650652014630477367983118979148773697196965466900927250504500765064609067863997019782278213525481673104850771390345854577196179152346902918084165459334395592604705097493691402373633567556978203752290165207454456849536041519293795857041993511173765554324448618393655433030549284122362405549384607052435061010927340184434570257127252703674886580409793898789754980925303576768071289410955815229411154637086694753187804778718607619181352481968250757300586664778012270359537215273385447231681839398840354941253591841726667244497193130134073198860878365463926056249764563437282717357918713532754215562791950432878007023326528098160027266805506270102826158565082628760003297860525056150578847385345865860050654143252685562959280014438793552399123517061798680263216362696622925877"},"decimal":false,"detail":2}}'