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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 #1100000008790791135 2,500 digits created 2026-05-05

Value

2807721319196927211720720237518388210312021331887969758720953694320813035446191864017585803250207583311682680799394460817200206376007120697994843839987196416822033943064362605175148000565312261085898197601993246564577426188844458582666049341482449209292624264084144620843296044671313704100897794590120935588426389942079822102705913183971621618465831256147032598607728466914321618565008358152866004589335818187225445941183160968649696451511056885579137531737988605614103932314691128908287921156868112614810965805191798539044124593197465565938911210598896540050926248104552207424653948599734292279469662092965315424174644667818633434400237906916152685573480067858416510385974971329531512969462311744213176617054429588676091437065620728433368878930322816023382354288057922483787793619948774118674474077949707706545005546609259736994712392804132987971661829228749355185015106111991924988955019526061326603518559256259179648472773582207784803340531077522719496449176171137264131073726725311810232271489301206346232622321939290493097135866998044120005245872162677178375842789573172220985145426139362142510238182559603075213712136671175341359167493725784652320064871319893777640489282688038932929813055313243175584300350116225324702251233914913738039734563478660894898432460824928609281172082612026421800416764796793178332708661929630373131685628517077844962220229047952853025028052196427964017422800980755929630776749882816509406364524704315900804335221062270243673087211523127458904562772953980061776421352186217532313938609612753058259312583603098540000237077008813935724859732607235040695977034142722612514710965273994403463726315203774996982586040600614165533231171944914815808724927552694575856366652761745895108532177594749467548652263193241657904498453726044972281820987651419675383542797147209377796626014724760324368215588351325193640559870903107689232698480676938433138718334549785978289252772971035739503153450815294040468480852407042812443314360481856719390208585455314267760908753762222450180178720759884207154104737805771861911342785277557389638344204707904736722392374520629214760426381885614752787137093540255139421212810092435639747475352069623342216749278424528558128361486111479393735835368490686012844512885794573226362623296093590499732073529881211674400229399067383524591039371976125263912565711201127012681831761797502885697414676728994737933289093073807279675062213803583111506184053007232598759901148479246423579513281585026947901124531475718509428108010623371228151514875836259407
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 62 of the certificate chain of a 3,331-digit prime (216 intermediate primes).

Certified number3,331-digit prime
Certificatedownload
Certificate chainshow step 62 of 216

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008790791135 --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":1100000008790791135},"decimal":true,"detail":2}}'