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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 #1100000008678244374 1,708 digits created 2026-03-11

Value

2781459556924833181419768641408551798488577808658844921630670180611673192068652087252060399929655491704282649082659516011181517009049062813226255264679546788911230319364130560495217686812458740869330186515511864604157807283923919799318148842332196265592248368697677662293607578354986372073141355311548692097593190221671234535845819965131459851696358828698870044634045900109683355528738869237908311557878035846672323070045608842672743117075385522333526189942903056249959075978834271975900522253945186605854385176905603940174013998252594495588489386375568763069234605648918152298375388200091684388031021125800689882931535722064632297582273371052816408288153145904582561871880909790008899097517353620868503592373889927103656886497311167946911351292775866136902565164680722949347763270295653100829253511734299374298257158023141282934201004028833179571358381166816187346389413751725949488580524654338220471609786464977791661655831729870690359534499367202638081895486141599489938639736320894283875845568347796841442046590765892557006031994966324353953994935876019368438930207043466824045775479791211711156443157034240176102540866595409847781414864344256857149940669744606851281318169196860452777244785759529884653273842777931722046980643065086787819818968921130811096330109752925299788925237803086645619505047778720540312724015013427533307169937191898181971130333485300359477012033772552244978313381187823440252886642063340150043070370423201876530754732537323274979519841988881612583640892674640901214091950290704558073615658934084332879841717946581301448458770270092365972185343240629657407302209474244972934908935109663086291123249207650650990095845501361791360941928006845017469976338726411554877409298118229779
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 19 of the certificate chain of a 1,850-digit prime (205 intermediate primes).

Certified number1,850-digit prime
Certificatedownload
Certificate chainshow step 19 of 205

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008678244374 --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":1100000008678244374},"decimal":true,"detail":2}}'