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 '2876313853479688102193097149325661964998932040004567017662533370518604136467156821697088048406905213975804271808015481978141465992971712184201404469302653325793123186279865221812993344379984430080746405734357857339438674468791480761540374551344438296405033062770553021204147217226580177818068783819923443592446359496308199581086174199082530160890793460791576905011090544012488177679720208598964798030961232160829424240992603018491555624334898565902064865031796654742947269800691497499880247758808833868449438162223391617492215651572691705480939164077112135848637263483261475182852376725731712800268485465576998013718397502287701488776978080059393296335086991785618072740955915347550222099524282852454199556884174900778751511619032794230899470736996032306311661599839384140167247251562537507364340488413683281051436722560770388423204824127508940868166829308112176520699602928624898133577001929968814389444670986063883114847' --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":"2876313853479688102193097149325661964998932040004567017662533370518604136467156821697088048406905213975804271808015481978141465992971712184201404469302653325793123186279865221812993344379984430080746405734357857339438674468791480761540374551344438296405033062770553021204147217226580177818068783819923443592446359496308199581086174199082530160890793460791576905011090544012488177679720208598964798030961232160829424240992603018491555624334898565902064865031796654742947269800691497499880247758808833868449438162223391617492215651572691705480939164077112135848637263483261475182852376725731712800268485465576998013718397502287701488776978080059393296335086991785618072740955915347550222099524282852454199556884174900778751511619032794230899470736996032306311661599839384140167247251562537507364340488413683281051436722560770388423204824127508940868166829308112176520699602928624898133577001929968814389444670986063883114847"},"decimal":false,"detail":2}}'