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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 #1100000008678591238 1,727 digits created 2026-03-11

Value

47108876312476839340005946485875890789091678890116783656369874264593434710950719241114449833783235875816263490241324507906696385064026273490251436505984864078106403584158573924784445393209071923179425760060686941659071351655140299311986016127357940577005314722892875222144110733697016359743254499531594424416148168829675068778021213144739630362599025472158468761977471331560850996517353089742629316277434738386556954238905833788692114980793898436423717346191048720264263170535027541775897906384021453133211421600228589722916704869422170028738317362350088157911144194926759221172224117705294974924876327667952729415468303040133478448412438898781467408031752612030688799055414451176359278612010607395118310663601989496033457143928986826157570234900125698682553696190062557643424659630474311444093760112133869524633235332370511182520298567299983122374071922774294263355313666948060438373443645318358134918512944286020054587035650568702714315761233577634616826751941577325568993114661856827154222971479109907049310585518556478357303653847426233004434749323737671674754666264226391884542502284844572412055283155989892676105193125892496368090498991106990849771177040401376973402204481518777195867781802113191879094507538620509330937580002291913247087175925755023351486433600669527948804349258658890047173944623560987077659525799850397863726990666618111150862366896802182264536557731657950267115313081425586256442828877024982058474436846267977067445740190308952337644974409617513318547097204924985979895578544676845269857452976740064987132415164737686144483626245752445673221705949903156296033623258962690588879879815564717016254104818617616526224678912350618030122245197687769265343922646223127707221055812340939728742961729094092789
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 54 of the certificate chain of a 2,464-digit prime (171 intermediate primes).

Certified number2,464-digit prime
Certificatedownload
Certificate chainshow step 54 of 171

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008678591238 --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":1100000008678591238},"decimal":true,"detail":2}}'