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 '816102150060517859606973975131845612709594934463770848229714765315485782892682920475269097234487254534627696862241223749879773227514476208648111800858362777432304146342416711930571091486109441516920953145157227164978319971629748292293975973764964144179241726788364905859034728922971276442005525056412544703865904031507383626941684694860663515897399701069826203433620683273368520016740560977409927657847141128205369216744869804148235279302868020616737452214435317822390515424869660071628439209915101331472780314685181694326621344540481827400636789138466202117293854596825532989897186539658083796220008085555017466858983165786230729729313408546993104121535773' --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":"816102150060517859606973975131845612709594934463770848229714765315485782892682920475269097234487254534627696862241223749879773227514476208648111800858362777432304146342416711930571091486109441516920953145157227164978319971629748292293975973764964144179241726788364905859034728922971276442005525056412544703865904031507383626941684694860663515897399701069826203433620683273368520016740560977409927657847141128205369216744869804148235279302868020616737452214435317822390515424869660071628439209915101331472780314685181694326621344540481827400636789138466202117293854596825532989897186539658083796220008085555017466858983165786230729729313408546993104121535773"},"decimal":false,"detail":2}}'