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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 #1100000009042393939 1,251 digits created 2026-08-03

Value

139373210704469732592079418917469883755400131604473905080614907530730282248379319403802475497135330311271591367342626220073988721797893141920669839592801802584144454843293403834695296603061360928402065587529069109504364385342071507404602310352843539775669726706048829578869137559654638009497031570573409144965355975311925281033259134833638808571609365341367306636759678364944872853670040331829478056916949879959541415482661121405671080772889675640182258992005970695793589638879277917407248708658886424674442042969722091418170209732261208624608348708060148459715801794196360327498763409999807048442179923764626363079177119776081869505901289708816206209727718579731275234697632739305620106991100681899464450634678416891848002459508362749139536790991265240881141219000200843361202597201405005619673477355858028557410850208567233553720436466360116807286761190486954676589397620527875219048359781616295625635306332335149302864268906161753886020337781390967537393425966536655904919323812254094513515124391852796473057103489666306350349126861781988468300519043972301807805746280274552881778512127675908704005686032417723510017983652482045746488582522953754121330053667942408461512591154225886922816289368373173372517875953786791654986699205895663876555245731
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 9 of the certificate chain of a 1,319-digit prime (109 intermediate primes).

Certified number1,319-digit prime
Certificatedownload
Certificate chainshow step 9 of 109

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009042393939 --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":1100000009042393939},"decimal":true,"detail":2}}'