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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 #1100000008804977970 3,382 digits created 2026-05-13

Value

2561865509352516699648298736149418760981491266388931538227698640247159533711968986373217956620860015645626303068847767954635245193079911503606732609311400025354044651013951793707494996557982183134939802246620161779725609025339589896526465175754030903616646332258926793918745264475048394686326520177149876237306506142412508097145032286891465223878170794928833581103314709795293952304410941434296897845567017124135592384963941723300664962474479858389638924608253988811433286015374702359211277427706908441789228559061052974904737144640970918782322744993972101147000374870076787807506514477470642817101915039245796806378660867283458340233852120748068058386766780648315270588991497942833714247640037495305661492485495826389972514909525728191793352269972871287235764156551869658205838143155603530242245519280559943746609423182765238788386052310167301989816941139794011687025996568916037806179420990510865935603755524147811010704839706322668830661931418841042748098736896681975006552654775008993157413341830749875032386918817942909389667423342506390849598171762622153860672821786404111179621043449779410680066473750511257138904772701666080108786329905102178402514194057562087801175300278859612233577383137786959414609147352035025936505306215463600632996148763441879663468740929080239653542785713185345773062762873153682539864387072407319591699229323970187859272647688273889941271207257838303997657628171750081114254500368896911354688484700170138018226611418856843768426694835313284699538940155906673700110337747938078825495754582142086966522335482513997972142661276694521160581809673834386107568743516258302409274956208618352988761267877151215557681179233136874360683433239617822807494744592887843232796143247345029434208977811114126912945459098159065090486149259809538651564082168511479798608404603942049389648232983215698396015389100030320105133509488920731352830973004865132547510882956442385890787642905823383976590872485342197901864050196505136721598279446547076593732740408952918219479766289302672854565359279879822060331844729689218703484124205755375673962256009124335651616523081068512778500517921715516798192429717597123114020395618941156781737959041207853886919987005744068950079146091789536018916100087506481997013132776001488448887983341607797768272220492199179000749871619165074783529428636654801144471465667110990428205021852629682206372542629775835734003317144663551255547156928391995507601866601558196185000725362290126434320419244807070501844889367413799553085461103072080723476091319773848476971403908064745807386338613684484883571487192918024291507087363430400596365124374544155907665077512429161046365013478820970142520083449543147281765328940625304497736086255691444556141109149191471951765579669026952614962663452778408821606034713640588208568575118629905186042321114486151250614128023994221342987560581080268540984081426161161665305161192362327801834831965637053558692977836272295143775364144156323491275507030680268226057411137157233253711926626864637149370855521470377442854587782399457485826133340394711914188528017751872848907779355008788338068876228046445199536834257690945161227191737200543728488951325743080676070366247429318166143539092057817492632489223671706254108899137552390207714788593809354735093728433078527494275022850636757875948716698125952642588705299611574814443205314828758400601167205983061625345808665574658324428704388396146715098973342041991
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 86 of the certificate chain of a 4,708-digit prime (287 intermediate primes).

Certified number4,708-digit prime
Certificatedownload
Certificate chainshow step 86 of 287

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008804977970 --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":1100000008804977970},"decimal":true,"detail":2}}'