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 '28624963483283286739650734160847695183252839703748667648284931492139653275347317520236133896679908453714126654996282342835999739574313536508308343872629829052732544691228451939976678315974326691768434543740334746589055293007824760710526228382357242268779889250391628229063932474081062629842616626394605542616817914114801464460205409068575879264228257674130909232323212217400969182008596918157200657392322438524847817822045470506840037704799209984017884680013010339199371219150484318938311293494151365806571158986755299474697060832605774307677441901130661248323224038675758090566837663604788725485144519503258310939021464021618493604275671057108920886995934143655257847420410798454810325259094794462655360219871280919215218225004554700518770345728054504998490719700489344559450129693682832778147063929175757316345048211730811580918696188463745957329993938987754275043928077577590038486587831270401442901643390830312102391777668070737504811591183690939236174923277563521681479303943' --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":"28624963483283286739650734160847695183252839703748667648284931492139653275347317520236133896679908453714126654996282342835999739574313536508308343872629829052732544691228451939976678315974326691768434543740334746589055293007824760710526228382357242268779889250391628229063932474081062629842616626394605542616817914114801464460205409068575879264228257674130909232323212217400969182008596918157200657392322438524847817822045470506840037704799209984017884680013010339199371219150484318938311293494151365806571158986755299474697060832605774307677441901130661248323224038675758090566837663604788725485144519503258310939021464021618493604275671057108920886995934143655257847420410798454810325259094794462655360219871280919215218225004554700518770345728054504998490719700489344559450129693682832778147063929175757316345048211730811580918696188463745957329993938987754275043928077577590038486587831270401442901643390830312102391777668070737504811591183690939236174923277563521681479303943"},"decimal":false,"detail":2}}'