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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 #1100000009056642838 1,804 digits created 2026-08-08

Value

1239153843886531935476992252793580891376644298296231231251539222336318488612168281286982076294440644214592093337475960016197537629010916502112276936504027759288632315784986523695528943064790868231721551781989890141988014020268103623938485677440633407618949192822862954958935563903957761830778857104879628690172043602578220008797541300846404244031063444216337643580006205275857755275414359610867988518177732833834682981552760129780205029345593376339340958242672090958386872596680618760468260030900525997474703113921516100039881469064008703418505011041999570098985494458382826499719846215041304833467985739708743739906040580919751601703326844064470847529209113831748199219622970892958051934056859988517893958001081312787998426426865571760251795088056742793902359546788537367779415116380547442960638008640826425566887892102363444240901083994456894070020290724267543151580159506989226920870527450976198459419854436640230708119739707633589703004263337034025392739631230558840736987124987149205568718847235474391903331539475843547635721431745303119740682837460922542757009694799308350901027882791596478373847307060414131585916292761935638316948283290741271348923468209131139032785488458035838448800432134881305260734243915702936353724371230250782177171739676365522336743041552463097737266130201293981488197585874170226002572339251621248479370246374651437452028325395578892062799634234207153130063990349593680198391582412874206477087280977772297924597103834174936679213315451165355386096846280366956768483158646317225106043992409376495401197087323142492485881871396752246961658247097642573753869371136251610521585382459546293611100923683942705358614221062024965409596621926879865358478051879887103656237827718114135831570868837763448857562316817841090765776989153942443002218305561917430897669914175504846838389
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 61 of the certificate chain of a 2,536-digit prime (201 intermediate primes).

Certified number2,536-digit prime
Certificatedownload
Certificate chainshow step 61 of 201

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009056642838 --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":1100000009056642838},"decimal":true,"detail":2}}'