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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 #1100000008766976269 2,256 digits created 2026-04-21

Value

227867820844968479475017871919119849865317215299611555614700059498612790430534731265535246377175648633571103396391352074672145746118403002836128723109917188436756330952556314420084989055661924458770086623560039028025071704781553944520006234465966354785072165166404698287343461568496797995690168175015772665351546041933492624285483542176127347131458496992653598387814769081453751597707189014260567264335345605371750982737830241202192279905657103542103381350364256237460424309832487134352511015590810173482367727011661631517838384653156149427894615896875597781079462592538564193020315425103055821825571935049270614402637046585862684797779258463057522911425644333331662001985054331115079170617504899408082420162008668616557928572968612028118542713684979245898129920400136810347350092081744902607947512844120336220040818731997279517954655115106927958761110820865293215237577943507903447523051404079812396660698314566167008591224757718180593234364375490595625814083847118629698658844139472857341816466361365391126368793561458494777880338954318564270730886664487921171575102937675803474864384594620395333572156462694871130560293639783284316558214281890639592988465997953821374191091685768857162694487008588637460248222078920886362172971659190997318666618098629831624537476011578736094155491916300395684285953791827402188727026584724575900406006183921246042978340124668818747064431384488183235848238231246216396821281698101023255036046128765545244934545416526825850370842054860728652223472551717614839044681977057560393749543415972905776502985257114496503434619771335943059999561410834034411362851181455321333256200463845854072532789991254014280443601136669165727190365113305481400971879708010564477027080570091845774128738607014318311906609573793850655434745588206706881695242323310042865472180110445513268789399784943180457764056719093596352480737907524027699770346052185630378884502029416004067393139752230614858365710106707297013761974671593331320174660399553404595866632671695257281194079641799933569772823341107926521669251297162008450672520458349715407699804269148021025784594323420139015324659479516537615332975569656446675472095236290413023686540815953957832589194007900838803895379173622574076953268481908346868579320101064187704999707695010844068468691
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 54 of the certificate chain of a 3,127-digit prime (189 intermediate primes).

Certified number3,127-digit prime
Certificatedownload
Certificate chainshow step 54 of 189

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008766976269 --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":1100000008766976269},"decimal":true,"detail":2}}'