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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 #1100000009059913491 1,556 digits created 2026-08-09

Value

42416583385943307605586309427454078291369970948606669709413327306247885086784926785265560606834188407928590659129478740856579720695905188828278060207619642628495915788986807847526459500872970642183034089490858982637060374509994648735929436125529198615957702289027261560053256021864903238799950650039099806061911015041100839538015928764500383898777674013392787877693444811475319653219699563438332321666911800515390148885613343321823348701820548802978824259350653006030991667806957792327161392493362127080316880189816916341562510523107391157672843946473115107917417988580617181275669259395319333485529591446377543863820314620033722694873811709630694583646274258762744795480222815799450944132307555926367443073703655068140510200104020792157391975211451419953927790936939393405469519727738748335096983772220134039188661122627230167196660783434210562711363418684072045435274304375120345323803623380982166570102482054831697442256817444150802264331400879094939965244379270178177175953683313922813176413591181049413752633620383160911953119341086048452039844590174155043502617947879734554691577915200486463614221242982375660029585641182794118240974805386949424306065634956941989275408040710059593948979410388827499417496845691111573969223170409240976687494701195916732401424484069963904528992938868794710198467703791680333540047280676231352018065072321312215838089814032363527324288986145613095313415260399270162893343913193502666951703581119034308996113176676460688025769313556683696179233475409603294531893399907474085566526395991783233763577246493971061454957867
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 66 of the certificate chain of a 2,367-digit prime (174 intermediate primes).

Certified number2,367-digit prime
Certificatedownload
Certificate chainshow step 66 of 174

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009059913491 --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":1100000009059913491},"decimal":true,"detail":2}}'