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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.

P · Proven prime
id #1100000008787409464 2,148 digits created 2026-05-03

Value

121373703169057752898862950139840062570680550415896761666995487563859873975278445662014718261104759641113715970694768665069610034300540535036535743668943970805560317873464960275898151090542643390408410528018463256906462671607809155767934641594300971509109551212167370040057781142834892691925082469487380769431134818901351955404285219458707422209131993758884457865851878887837814474268232861577188883285668440151178321823120003012797383623303122662300442948482146465855169821910705267308342133858950113634990203712397677103169421900749174390828943144847064947821422517265009763326108615539889680681745909586179092801532085038247085438403315861882927807233217819724497276042044119946348731752995802896498945929028846248608147033118675188146669834563662725712756878367770606612731993149048327644769548125643862628863578259936916664501498491786873172857316221179417131368294081148922755011862890439924167985319818339397079352479067728920498449764678467580315706721792081248935725725518867924014183598608359202437609175681137364353856858831535374383239150400729932900238315007641909740471803066245713417909036577137351311647310276828771821847379069710778232989542455716399932286172645316125499281641318498015119903571349134936381413593169463431947537633326584208477816266749230762395858467205008900870759534304755084123411843362103474538851981182886751546180226951239059034578192792431375336435866471800823445419153020658043898879263861817313229921242589567586974305025899152181908578445083458470465619731485492948169654156290933738891913530308474231812052054816124177319396388630614036848456212342147988209794313964606098096828653150868132213297982190656346587407972652634775034219600563256881397780825589314524964591934856927985446367827942224923302541592708476479107356884517712752067082429557033325226268280598852311258443299760914438764165293661596853116425213722396177896255486815410442580810122619041148425041561122863392650374546292623839178335877578509324894085552478035124754006492241628766346456231754824917989208307050995139191564641229058981810598738065955164441435451087788374295840929259356688486448296151029187820077929487661242100447677
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 70 of the certificate chain of a 3,261-digit prime (192 intermediate primes).

Certified number3,261-digit prime
Certificatedownload
Certificate chainshow step 70 of 192

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787409464 --detail 2 --decimal
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"id":1100000008787409464},"decimal":true,"detail":2}}'