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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 #1100000009047427173 1,068 digits created 2026-08-05

Value

645071330904972930170533251942789653121906018401684317001837709656693869594190961826304048974342194154416661673265684763396355197865247450694536479842376606466729876842719887034179559282518827049406739480166497761808864748424130633770403069518965045316977629676912265474403521824100402773082864487994255808859845043922170146890498037577049175225341214608520875240817690530042900872181998385267360037990697683885141088268690413933253248809651306807727158202244628768172082548476978848822032788597926340316718765127134074329247171473502367850221138473347082832131281606478277904107912958511709479263619143722119221936549569696738732223232831577086904300946441294617344862276627178582989548780930854263726921336419296432329416793407541957092229884363175568876878862162619455339355963584392260581676568800121265342877442013039394860062239993263867995773577960914166162252290224553945217060085394346745959855527941709976185894675906648153790800290323331221722766414803104717604091296828320149002950401252298829474570164490767162048113391705633343454966110418418967055133459
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 37 of the certificate chain of a 1,456-digit prime (126 intermediate primes).

Certified number1,456-digit prime
Certificatedownload
Certificate chainshow step 37 of 126

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009047427173 --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":1100000009047427173},"decimal":true,"detail":2}}'