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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 #1100000008766977851 1,088 digits created 2026-04-21

Value

72211015151689728125212401632514038619288514118686408241738710125050853655596880422588747112786716276217078918081272257240530267310515516645872436952437782293726368343353750790158211064563590008008412913145520556979287252120905703376980189903859560275222324035688953510797544030950296905115073114556839644352701284789575376304274225152502193776005757761382406419694349146145201279599221725764492467729860417367556715666648968253250455952820200728146092229781238568189324825565727414895896068841252607355485442206399475697723803247681663341481582700544523594088609221052086637514518778143923420145602666471198121716815136203245417789032313400465477126462691445353706145625798662116774037086820570868944631061202784757768139713153501468892383544117356738966330646003061750363130131868708513629642637588914767523903677760738216794194087305463550200568330367569897732298236362112659855909514747840446517090754207505676524226825566362706837144739696792134483666452416519822286470122185536575157423380700089761664670115406094701075615069883909574585244147256802452931598797285588487600825614939
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 137 of the certificate chain of a 3,124-digit prime (188 intermediate primes).

Certified number3,124-digit prime
Certificatedownload
Certificate chainshow step 137 of 188

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008766977851 --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":1100000008766977851},"decimal":true,"detail":2}}'