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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 #1100000008753399251 1,952 digits created 2026-04-14

Value

52821629442731040085623807560482492138519005078948803786393714894926485637903775765181362881813045474251584562347433797502757973652043594213973987284876773693951985078938151409252666230152911811098565239477253864821637597396808909840699305107193479340537576158563102521385709183549765621060320532796973311706196611112915116546070278911205015847397933709682153449184254890225727128333091545627934333905075655152545532167992844435723568721207390330962063708800029510298642051644264555867493915891620935168623667541020983627952413288134774633682573207203833833893208561187157861168690409095641709897190914111506348069301728566503071602211654625417609879231188814188268867287515751702584495733832973358431002883191629862137656748633472281319359752620289800387092752639718866606859070756483377012210340569843405468286049932643304917310603729181505376946795417559881520658759864646619368009256062989521770686561431188313422392785051099465740954813044846713701173663133002469207790553158418857719748201284023812187192266725776356018547850696286542367233967596219376463383344710730968715076850282083664041207134304850582418346691549835223313519808149765053295014187189120940395914544125678708318406879902754701766658333866564395767409338354872906524495427846028828162175337901437690726781267444807842392467989612267999579183241571974666153500453451065928959459517469393999864349800848274371963651481969671739617206994883594127890579712567265454153241030729686308653299541774885575186055016381955851097395261000585973866128217562336009843415586458118330193412641297951296010232478315236748971334118891923728581087296606278037558536505140847451086417816310020916013574433253621997004764005964633410702867092260494493745574244239844942629963846223633697840017150433696389533447585466378499461533780645379778434417293422616883235038444528874852478828249845331549061318294373767326096415200033691715981221190288771491792222154703351762404145263589899415063509041237
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 68 of the certificate chain of a 2,746-digit prime (208 intermediate primes).

Certified number2,746-digit prime
Certificatedownload
Certificate chainshow step 68 of 208

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008753399251 --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":1100000008753399251},"decimal":true,"detail":2}}'