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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 #1100000009056642469 2,059 digits created 2026-08-08

Value

1220157288758169034703181878286306904475078751982570678359624977240659262138814019654829150135809196264078778721015813840154394303370104550320037862208645530521290692853015279470629328451582320314336595531883720479295231025619197713806741056393996263255578412205163607713317365107807613487139290339018496074481505053754223340430649761700214218075804436810982529609978875253486057632485433168052348090153190998622850246512147926859202951571320896016340447867820712262946141620215354394462538355339985844439818225936676996894669705460744816215280894954298046504817651380843590506838570549221268053530435598366157292539924954333911699547676067599860600633281843005047633142885501222557412448454927285968433935786839510390317247005880272711074876017284919547934332936211204667504313501021851375267531088237152963002248031044434624177750283334737898030491986996337500575453994365570327936620394930407334467676805558481736458653178985599793526658775202512477514721340100342987759994108071273108158029739764484096381075207542305930900592291345336723371869581426155414018846394403696925120949045667986682604466342785836163414430508892660808330243120908282575442210635573455198674164970494521694971990017538387607180628666447771323332058778953669290207692152858041242871319823095330374965919064044293320243860231417346158477560045147790182461659130245238351063721958421531083808082035424168175070919484010855910780571239495269683002024642348627399639705448593783054125037067242029298784889657636165749680131654307508192188845334624441784219945206172496220381208273197317700210237856336176652719674103351671917398649648949776577919367491268376865778311181779165970910812476897555720507869687438057902424839609413477596463336727405622696943728563481363166537595085180632379076171568767836387318753341359772584772384292862841801388878548239749861579025970029846755624937994993235312480417789241481791013775333011102553722204661914693253843928608078834598484284311182621767480774977255496002369469323113200003175896103454336225142877649509755828983811948075156580931651027
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 41 of the certificate chain of a 2,536-digit prime (201 intermediate primes).

Certified number2,536-digit prime
Certificatedownload
Certificate chainshow step 41 of 201

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009056642469 --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":1100000009056642469},"decimal":true,"detail":2}}'