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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 #1100000009054110981 1,821 digits created 2026-08-07

Value

155142665787682380534802950625336218477406181275572811019879286882602477707290735233880527744128223471343546405259232353216690531950196694399762150636876091013854447890156994756879424196517626605151683735485086573489611707254455750098730067854990488223631347730704091386184145394857230583053789383952118530527666430316466373330178892108154794240581205438808838110352493446972376713813762521826864011413433663918446845101750272179834050075375366426290228699302715367638641541655049854584068735733639014031447486638716220038120466459981222162755084430795921179013123746190805097465342527993454562988546807399725446603205823593398810170604036947523535734024100035665816425698513299415862192032970595058722358610964822857718075615879957799294108495520771757726768583574697978755459259378960790286910211681640170827593436995708481527747254344442079173464456753953433850831663508435013650966086752107658108012535601277933783564437649167784417569887133007411951040640610389878297368064444397575260686620609791442879437652046529989984380709430397894049216225232501678795822039233842894047963694569350369878305585107390926432934614646276228418162682089626736462413861628150169625791201085232385327754746871559550455641595268834558681762369646329703867087035340914830232560241167774743664108166626270169859968929040864454390233536926141902252173842216216639460072148633567590370509144593012265977232901662452561209694875963860076343456841309687970882076061629498128571866320077276165938684539350919364192942339692371866487230518654889428396577239048638730104155474878245137646324578681192994427403634905702448574697123737332252793303662765131345100767442674314168910920421823118172188721719580803631641255257160595892052303764072199433993075952437974094114575715407137629486453408902454810727195844739110240912898337234978942310349
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 43 of the certificate chain of a 2,306-digit prime (182 intermediate primes).

Certified number2,306-digit prime
Certificatedownload
Certificate chainshow step 43 of 182

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009054110981 --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":1100000009054110981},"decimal":true,"detail":2}}'