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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 #1100000009059673948 1,612 digits created 2026-08-09

Value

2548856635722701706131922269743310262570763890790844541769895754372102958717198650606925517588871461077868982676356277423292538159381911359149054875884081626880118199414930247239396525644269289423713176034433264998272438026758682573898333765810632066191936899386788519111251621097885626283264944968433409285923854200813397793719452757928708119656200065314955615273043520491407017860215690518321609216650192098749465906244210351962261400597014806452148718503450731591951800583385381222212799808325317013403042951578623340034030150864643430507660874255869336593520350064885316602086430078356017405555765486856257985317774413954912962926709992331854251967217306995505553189387754045408203083708170184759018679005387048548468779424194092482250065683203609987076159798772287521519692558231557087364139243074466119466611934533501179998105856553409114447889957330333032396500175754334022093872116860118865409121011637083317091180910862227468067702385895617740963163832299915960050033112979938986906606927916173401669487331402129323191376950765827395881789840420425227252836570466681158736009520792430409121411765129568087505670101150316921870252145858372172135924483609542792857265328998644163081516856195427729553298415999896698035099675015236283599297616131524350059860912003202366593811502247334155416169111082695221645351371906826709868377178009116455119127004271847751653290575987494015991734323006873503052571295939531983277148699918059245890245697372812088873665703062134831902179396204110809796075277168632535965192446889351756544409894151109227729449499971580234273683338556895152327623651095369142289420682991
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 70 of the certificate chain of a 2,555-digit prime (187 intermediate primes).

Certified number2,555-digit prime
Certificatedownload
Certificate chainshow step 70 of 187

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009059673948 --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":1100000009059673948},"decimal":true,"detail":2}}'