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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 #1100000009127081885 2,900 digits created 2026-09-01

Value

31341345374069970868557968768721366270023466559996981806000101895856598816763819900725149738031207513007261355169373489434431210729044640638238431730300002718101630241158486770730191101820791753029553719551660443954478339316892709229214555197866868243798061296345067128566079874907510354736897649358259721100913145391018766631240895582171261870076877817028628299716206292570645121973228054321603729941556728065096849076950862324835875129276143135030800993278100363923262085375649293065193727480195120648085257544432955178912636982044903777120565158097689309805485256173118448321666918497752948181322207973114191205988736711685013402642228675676187205989633552217223508996061731016471446836508291967328502974757605814108909604489398949339509484732998635570978480808906717943519830635917749735566895223872747076166131660844327548211320602036114330409093213090580547592574452657751899957335373788689339991257744332072817822488050941038594929752070816286360947684814125834999109097598601007436434723919355956685440323910874652474224817648842727799703492747907481681795215639421026701923605026592419713087493067104998411730474243368783927613713356620795597463746639783964429464011366535545949692535425633617766118840481761026115196747579586408449960491330965469473006570418594408406628449687839516937817639685553080363499022701888420389657065018248852401674329954930929603962922942320444938673281029381569299055235820802514996475969989085471895806150391259512615162326703209066023112623334838853346191157338126573691040776737311868174260480659808663559348493387996248029077845769739277502406052692099932085082591802076455429533050248467242041678679719281483474405799142629586869524029598217207557332950895698044230380651164756141641846416633784216929683818010057300504849426946001737123720296254103786746942351242530983358381959771400311555525277335791697341182816781860852694279030484035288702622918909476841509572987585096688352915920541577173651270599323968267143057503480625038615735262879571992834968663483226865853569683280357722446691997883314624044605896857063670656106408909779632860557242683171945687206006918857120499159203331151177287078049385781033701473565087248349908210961444993315986591033501817312572197567563919344199737724194321671625333403695564186240910424127216582799735906262751648048935130527509900698938875330375113577532804294476935604760192472629726184963010568388916057273052455991793364469352091975412447885269193136431378941218301939078361886494788433537857008105366053711700399856243557578558145836953156474483869840851891601955306537010133037021172379920811671217239191231833585413075923657604502247352091725129337688203829593951278983888727940898590478635157337847480668993620831118166879926798078558607941544814292622524724646785188627426539963677230573281224429867000809741174908248221745217523141685194266157826104035178869697605527419819717460528959664065676354318669
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 25 of the certificate chain of a 3,127-digit prime (318 intermediate primes).

Certified number3,127-digit prime
Certificatedownload
Certificate chainshow step 25 of 318

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009127081885 --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":1100000009127081885},"decimal":true,"detail":2}}'