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 '17640971414265364138459360343024298238739729355037315353106267276248125807831356068844496988486703560718241798592862509059443522586039771712526723117614193898886508063620057726066294140439456439426650669334077027619947708887207529088132559401886756788263705530803174687258771518103319707205142150435212174112572720008148131694784285816100200042814541924834611969197476099374230178812904292030868912659039210930103168810586253433307436642802666983502911198167883463489261536765546348865253048013363128469191326696945318802527944113204040841226148439703726860439063686353212592668662077577960603845359193195248436449501229141943033984337077919713507267969298908021132807506214412128240095191947774474409018909398505306138569518846115498514088954125189059287951428715029396491754102303135684073700469521965037179314023021953975170772527265296997370225132443301590041011192060156032688379942223161102771481749912024290628665655672535550212633758090960408050819967416795875389361302807451967746770105325130589567894157632072779763077428672944741356828208026849448434543815138816785116293994905154335697226160591093321609069324147253572247135183251213566027183443732019497716920869802789190387267447863269816374426244792145369539887197532878485647646168870968304078416899369580849261524789583982182497' --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":"17640971414265364138459360343024298238739729355037315353106267276248125807831356068844496988486703560718241798592862509059443522586039771712526723117614193898886508063620057726066294140439456439426650669334077027619947708887207529088132559401886756788263705530803174687258771518103319707205142150435212174112572720008148131694784285816100200042814541924834611969197476099374230178812904292030868912659039210930103168810586253433307436642802666983502911198167883463489261536765546348865253048013363128469191326696945318802527944113204040841226148439703726860439063686353212592668662077577960603845359193195248436449501229141943033984337077919713507267969298908021132807506214412128240095191947774474409018909398505306138569518846115498514088954125189059287951428715029396491754102303135684073700469521965037179314023021953975170772527265296997370225132443301590041011192060156032688379942223161102771481749912024290628665655672535550212633758090960408050819967416795875389361302807451967746770105325130589567894157632072779763077428672944741356828208026849448434543815138816785116293994905154335697226160591093321609069324147253572247135183251213566027183443732019497716920869802789190387267447863269816374426244792145369539887197532878485647646168870968304078416899369580849261524789583982182497"},"decimal":false,"detail":2}}'