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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 #1100000009084386839 1,245 digits created 2026-08-15

Value

408837803695723087644142614253298425592754869983514797839135806857516908914077684573857784344296181290466584323525396002077817211377800252386968855484773150329361003082372228553017423148276964047367890830391146800479022024868091740083372174631306461865375739227140917265619478828019117210882571415455672676509619740123161586859407374483169327431994482406448764634495778100883710712537222914725961367560782025109885927722321761523541698232381592955490879800340062960903752549711090563514809879838577282955334247686930062697194515586952294847051849646597329547958820700455818959861332386648740965650847940136125079194962915507032296143070294513883919532857691978093237931787817968524755066613431509711282096927643667029070880805660362952115386454563219462647731571704777400807246307281357855653584639217652529765790201769372281298323386064340608944700877308696693754912796447771358509063172688293662033713621335961755699952101640848024520741711918039995987834843463570996139579730847095244198699355287127862719746938504010550216203171861492481300776995510173348521215955945840578260122224264673832558631643325118854599390253418664288266442166737981911887722323613529242701548981168313760330284771610017661563253009192553630287529753156818536418603
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 61 of the certificate chain of a 1,956-digit prime (156 intermediate primes).

Certified number1,956-digit prime
Certificatedownload
Certificate chainshow step 61 of 156

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009084386839 --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":1100000009084386839},"decimal":true,"detail":2}}'