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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 #1100000008680031391 1,201 digits created 2026-03-12

Value

2787763076224462163077197024993179082302833636113961920421343842663506993958637000940660175447385806813128954423507241481359999299663219268071726099374413453116572262905268790022347237295979945313349813996563785193091945070475073419929365579382273588058084893236375522431252191079310284121619405679512252835897266435996091433761736120535864830351885247634360282308535076857976781946349865456952154704316278370137457226210641849409148624609219756910719958525848998856074952092074962692540124672829658956351977693297806622117398623245621009494429021027160622863225481626753941047125679003643042245151087963213923894483566419186537830270959606490478214290199834707357594352868262694420756359676504565163271699935811097590908273788321287033771883072537400863869708983230646274463805994336967068593602732123221952292225830807393245617262823547546173626997656460553893022957562797212269948397542996087598536009129034759844083262312659946156208573729901931244225324298986094064353003231988283972906474553463829513508429849126821673132410965824263945690443080017963578626602454408562814596212665808482968481889224605584045881871109258968705482802200034423798448273406626028878653699336433964690171681068201737
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 80 of the certificate chain of a 1,975-digit prime (206 intermediate primes).

Certified number1,975-digit prime
Certificatedownload
Certificate chainshow step 80 of 206

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008680031391 --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":1100000008680031391},"decimal":true,"detail":2}}'