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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 #1100000009080395420 1,882 digits created 2026-08-13

Value

8530565718239848348637457998165846836548606275875524807804854413702469875271972058976900830196215320250491052560006895482810584978328833115950338020020919576605643271640031221677266114530856763666100767538575190141551402064038963214628852679527689004081300184719910506402793870045869978379433685577119708970903670738292575018397101526959976392610368618499281360150490468512665224664415418670816158252349145199641857880660717786444259679856809121866312861868648727530362982364201315127090522327696504466985142038297680896968325494946228934814867053023041251818255964503468020891261551732270542633882988101533598185238271686129935641781460817682618506165892081107398154495408261714142487116904498783035263790636598927126317738749143150960807190868943431905566447163753526768923788743670756497211458127376543902120440527507279587478162967225333665663234573920960119285084301017096288327992534992885795400438766443100069598237343222158046483801772754558570770817840774396187084529643614322891334835944362507195063011659791688103067336349520712124557499956542211400782518552064668055019978348288806236512647145806625948729971253096365721866572671662540464155396213231301392969075822336680879836078126351715624207013732778571303314775377394664036688055712223617855834434387823809670310025309381089684557055561819253489140452708946944122697523793874459832732194510649277018601315716403700844367753071418122064941931531423709188960819963608689399604230398478844668451772902984733053859958138342460855138429974063185930670944272238461506438223912737811015879171778374294484963064219567985738243514239233049403580211420382414737053726642282528742894845939860203707941497803868431966153289880447586083654489734977957992164678670855499784124890903469499227291721067124883808611287641558218308303435126537200357091844257763540804679941357879144488625332167107112035163369280829193804723440842769
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 87 of the certificate chain of a 2,963-digit prime (220 intermediate primes).

Certified number2,963-digit prime
Certificatedownload
Certificate chainshow step 87 of 220

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009080395420 --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":1100000009080395420},"decimal":true,"detail":2}}'