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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 #1100000009054394384 1,085 digits created 2026-08-07

Value

17878260360787027719164047665202413741045536494437116368507110232161904683850814596580652936935926085073806306466565750947219096495140635322078978039835633883908820144497604697364775037604471330953052611392569544000367546181794524491420130947558195157913394206706684044610237113328376581314931081815549610653410787622031692806829036799384579682790091185197512516811395908208346685459928820444605213107401851155345654209374762668979587462249359270399533887778472309969296632776057670293238271500680004994638312836727427624162397322261774810576774922047420594444434243123525466045699069997329419173418274484517743218932635213116758738303456428256080241500587964714886531289898825688704706813711736034995137513738989670217027634994926336324254667056136100645705129606377686709705189331997130219062706062985445644273832783731118919361031566272912363689993664567896386026629656458474316478554370338718947655605369695998053822946468617334341658101245998201960769702949302735475247908140125820724320386811380069279904574715816160085919824020853645073087467180910149956828942465866085349042169
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 43 of the certificate chain of a 1,625-digit prime (130 intermediate primes).

Certified number1,625-digit prime
Certificatedownload
Certificate chainshow step 43 of 130

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009054394384 --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":1100000009054394384},"decimal":true,"detail":2}}'