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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 #1100000008676532216 891 digits created 2026-03-10

Value

155771052611585016108643080403844491577654277447743153238892864356086060699746175913877609843454050465416588338577473916154583201171922392822797618185695684035814503833975018801168054838997117013387282659100485578024146109991752730296690809953931425885483118298217781834102583551677905711663145372876776545528283141684717045118145687034581384679284820697785503779472622120130582589583386482375621851680734852817534218494111896457849839211271438264112302634349936158664494571945256542318687021260823088400915490131104530998876047735029367810260765300252169817706671433622349475499190614044643100080056374838458680158721435147331035186303232153839773156593315010435584109259014570251228149315664156867060961628449418878456580055000116315682516460035546594616727622616003887320056893523005702007203843248410955806416932184389793819267288339785206604436738844214006566830692096522643935916950927
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 58 of the certificate chain of a 1,448-digit prime (161 intermediate primes).

Certified number1,448-digit prime
Certificatedownload
Certificate chainshow step 58 of 161

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008676532216 --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":1100000008676532216},"decimal":true,"detail":2}}'