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 '879926623381325227060627447261402332522549183723070316151852202288205713992530638020159114346259079473537990637891293221948868305599536946793918515380084681851583346921675526404490894652403017112957685672109917732535858156285230489803624514498462131993696520937938115307673029422175737950202223316719718593049245206025119664790766217960626670467512556731700751818527226814006843907621048224156330065558755399651129371830823271814600850900924668032450847147616389540575447674617298495644772374583317931407117695184690027565275236810509197557409993861748641764457013290010643441886596325547955275266623902496097631579530725928186251080064953758275982053971689694908973902192217048942880990949358252929214762549868160538922139807506746202611724151970879229301716922991302731772048242735770493586836824196117867614528465144597628663070543487916620826197786193711592634510655898156820862409732599009297073304723717193299151921683245008707935435159384697016547236050656754090072833012389143312455151179509125666476807418739219670152784214221523378156504849522114210523300380439207667677942422814289815264599354077323504020775995318919025184585094053011004052165885159012565681383506647780889943786902139109802955697243676031614119562666733896058168158828650230159072136463236930289529210448950186541419' --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":"879926623381325227060627447261402332522549183723070316151852202288205713992530638020159114346259079473537990637891293221948868305599536946793918515380084681851583346921675526404490894652403017112957685672109917732535858156285230489803624514498462131993696520937938115307673029422175737950202223316719718593049245206025119664790766217960626670467512556731700751818527226814006843907621048224156330065558755399651129371830823271814600850900924668032450847147616389540575447674617298495644772374583317931407117695184690027565275236810509197557409993861748641764457013290010643441886596325547955275266623902496097631579530725928186251080064953758275982053971689694908973902192217048942880990949358252929214762549868160538922139807506746202611724151970879229301716922991302731772048242735770493586836824196117867614528465144597628663070543487916620826197786193711592634510655898156820862409732599009297073304723717193299151921683245008707935435159384697016547236050656754090072833012389143312455151179509125666476807418739219670152784214221523378156504849522114210523300380439207667677942422814289815264599354077323504020775995318919025184585094053011004052165885159012565681383506647780889943786902139109802955697243676031614119562666733896058168158828650230159072136463236930289529210448950186541419"},"decimal":false,"detail":2}}'