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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 #1100000009080742288 1,685 digits created 2026-08-13

Value

26661650924815955917960683193566406426623189454179781573333442598159692173376947083923133003474826850379625434396721533679342372821329501065445355468574936944750420486530402108789142988088182395308631460907051885778589128250802684557170905523044677772658950556065877349001971822284513183847709536555264618491299925283808688779666279604740078850498318765364651599337891411367748648784382323056794267072137873596553176081215257253249415407687654165840251441663838811064172579332671763220236317682884712057011389907740246897646785034713168710168072782866130333710437744921427477985161710831287537228655168724636440750638314735026571233744308095140962017847932181926904698295061434991173136656683045801708046432095416308218830899999470778871402634135798705446571590562664504694101384646525560231611329780045053332636745372256096962099846055793639486471424108984335884891687949511182131528226119988574819117465204051610952226256783658041878852693253529776326825042311097266132711884518862834605081001694624861473293587603522692818003905195980393625825049429566434981650915934435521806954268401213613016922256245150789643812010431248900700798040395602394333656252854568832559970690086113051600062730302353455084985446526476348254175598905074598992502361234213960831977413535995637870143593745947831098894990107212951108893113484121027044677276608492544746958349768619568707217588146552670668920048822334447316685943171384899760083325949628980073940975826832453979599150738937117748672160434085633679505690037251651334221443929254455796903978562149444915581541169624878200793180718517426286732064759518401632714619084612690326226813252917762581424790433410731061025111821702588073858825648237
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 20 of the certificate chain of a 1,928-digit prime (154 intermediate primes).

Certified number1,928-digit prime
Certificatedownload
Certificate chainshow step 20 of 154

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009080742288 --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":1100000009080742288},"decimal":true,"detail":2}}'