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 '7964739574226242271909001316398256236112115769209964065877328920238520036628286415094682741247731899394094955986340380705216442141704359350623147664913264234576710200094574624364458632493486856446278429287192301155194959699614384462408268339087602778531347835783294385389132887373387647047332435175806994494712683190426927080013490457937503700102030658344709148948015997646944355953914855609462314661386372010873799634031351064075720719516191707596533344490631586783110363878467333798342760174596450396908205450262196994937470212518888039585527987997809425952464635361152439483464398847271823843' --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":"7964739574226242271909001316398256236112115769209964065877328920238520036628286415094682741247731899394094955986340380705216442141704359350623147664913264234576710200094574624364458632493486856446278429287192301155194959699614384462408268339087602778531347835783294385389132887373387647047332435175806994494712683190426927080013490457937503700102030658344709148948015997646944355953914855609462314661386372010873799634031351064075720719516191707596533344490631586783110363878467333798342760174596450396908205450262196994937470212518888039585527987997809425952464635361152439483464398847271823843"},"decimal":false,"detail":2}}'