factordbrpc · fdb
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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 #1100000008787270256 1,849 digits created 2026-05-03

Value

8505068231961679863775125192023920727918348050763302470860569928294170185288866214116276428179304973457542966477755355686648077786316124620749044767842168843689682718900374773430801148771489448235068240346768558053755069954751921163000285277750668147253985228637333625857112984277883581951833914889196472663082979530693560558413217989465674621076235569817616816787319245127928977633099149854519033801070445636026820690202292205196032997303725396869521561851358646416728059671430817229571034309026579494187683392666704187513747800224763643572096585788518744167734968841665551749965835604545258240603901914709664627620637558211497410650489343357946093416675196082259050003957438434776873557090103254314383341290598529390601653383210616046306469930090439809318277173585931996579830686131851273114382509079195551019884694084815454802812402815494580989213040370775660110702213642993223254167732032828888318683645488063505421183753161061492608324890758421298667611541998164100430262253162207892497057557003315836443576027648196203180203073053480630059331060742672439282833315384553720199698990468150271537423752318546242254592608120536504817732556756547167054440246324862232295762949968253225986949977232322309675024860073076004312947294671810382192155025136544050984769537359547926097152194150806073687934630273885124985060042655627955658747398980522031256028802983882125194878582323353896654553510860136528866032491235982293861156836496888439959035554086218314345771206770605200619471829844866234388933477885199384411952323885282509807770860763452447483321101720524415863466057401216260051822193543825278272998296181736447267563861378523644174645722548194535135364651006814314865665549373249564447128292970565525569999402685354562209371888840843666839630971884639283136981866360201740008820077806931801500715058372543515265156322502789702959731858975543
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 90 of the certificate chain of a 3,202-digit prime (195 intermediate primes).

Certified number3,202-digit prime
Certificatedownload
Certificate chainshow step 90 of 195

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787270256 --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":1100000008787270256},"decimal":true,"detail":2}}'