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 '103748020366209642722084871833506036137417271617575228857944463291781969002619175883702283835342827793191384411978250838685837194025282148223771724746044651606631440887238870407490419005733323764651660588433916144269474272020299363192873719842086300898931863022215780136311073726386631708802358365965984818915873417490634678584211467128605530637504208050385137348737780837941053110564926119623368125551880688466672213754491421054860180718626583517692330710812971810212795421266070155032394214894950007499636838722599754168781929695304139009981021499171916714533575631686544397104553645079932956920837425750459666340427797318299026535635651337564328465519091377073964867007196157714763821286734640030420416952160109747480549484780102091051411786225422886817912616330074666761108907354984262079196419284453849532643316264912690590298873506603390086320921530435471352810812247154223893887125177379055022650939717601654416925284221105564574279521381887566337060597470152943928915572357639206241799271377305634003823965460931689791101013258539679361207343433541760362620099393847723055166969642199836923115889768037854103963549866619019281243844116460682054576382091880201222203904650610129304235347168769593292023791428856778940901227350958231' --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":"103748020366209642722084871833506036137417271617575228857944463291781969002619175883702283835342827793191384411978250838685837194025282148223771724746044651606631440887238870407490419005733323764651660588433916144269474272020299363192873719842086300898931863022215780136311073726386631708802358365965984818915873417490634678584211467128605530637504208050385137348737780837941053110564926119623368125551880688466672213754491421054860180718626583517692330710812971810212795421266070155032394214894950007499636838722599754168781929695304139009981021499171916714533575631686544397104553645079932956920837425750459666340427797318299026535635651337564328465519091377073964867007196157714763821286734640030420416952160109747480549484780102091051411786225422886817912616330074666761108907354984262079196419284453849532643316264912690590298873506603390086320921530435471352810812247154223893887125177379055022650939717601654416925284221105564574279521381887566337060597470152943928915572357639206241799271377305634003823965460931689791101013258539679361207343433541760362620099393847723055166969642199836923115889768037854103963549866619019281243844116460682054576382091880201222203904650610129304235347168769593292023791428856778940901227350958231"},"decimal":false,"detail":2}}'