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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 #1100000008787270061 1,977 digits created 2026-05-03

Value

122926850749506995017599514532676377186578284923896859660135313271015329579305036886178587387145499223314889480377425594876550270755696210962319845583776647607384141069380180701412119165275475195866516607942098346496655978971163768504004430284878375792958410932470718456495795881546145136846809555852482264619210997082051605244634583847382458604011288891399636508857477417108778701974862163876318858185474848675297051632207285974691323665654833438661212659111333014686110302858678424854295765274294766375653844964881625612326939390204196041413161119554119957938021245786543612480749260397195329480945759793000662301375089877973104808331914829459152051795082623593213501552961300395806970992801544412786654602938484792697925595281255459318190814534338634897960174861078719592963008831893790572821301694303868366693986696717644752717494300523614252988649515098336183303938531587844602423903831638525719100143799970367610217654718453927374784263524928217863351836148771644797802544928262089861233899149142297557585132839171225648818753127108317967056719531921930011520993633764008514575030332008384344593980978266839220072715655279067599295283092854917123478368759841373377374050355761160150602540008168162075976172707288187557266347991772242514880842169899661875229321646801490559946170818979626693092353625364125610191613908515620568357167740023604884196406453415347742197312647887724179480580626559646259936187383616763299080285804433794543374462020490513071185062318948953190393770471786763758491386671261503669623628725858472058977917130819303481627551830581699026776434474145475580555556403713236127237728651928908484528412751732393791020908333766481650797004713208014522590912489770597164707862331203545997058046476216037666423709966110737170210649845022632934510237393361881871359474241181329686631562527937637403673689138966373439330383014062683245213688955121909026693968536986298134314920726696513803777074634797515962024030510873714471328999864330526096736103374402541
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 81 of the certificate chain of a 3,202-digit prime (195 intermediate primes).

Certified number3,202-digit prime
Certificatedownload
Certificate chainshow step 81 of 195

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787270061 --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":1100000008787270061},"decimal":true,"detail":2}}'