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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 #1100000009063550320 2,307 digits created 2026-08-09

Value

688337604682958566408321377131018905576888424912275576254777605000305515344698575856533575274443156925756375031772609721701948572210073294858522844188029431173483187553871585391337697047208148347056802982178913538946342556369890440302304222555056502718428304240837479545530113157632516356024381529892599827631612487480822000290276780896089240905919410664155741419524332504441436750179052942469458175682995461073650711111269727955092791374874804547891878333762459358470809429047581277921945015356794631532218773823419125105010179979274957490115046323657933908844232310824222141676351211074256193506458793079309604841726135593357762343783207382950521335528601199607538408011412937499921781140306958034743861745286882414761416030507755076812336520090402853310002139892183558259875938823039669886850695669477647875676819857565250230827700469495774329449411196830834552767534267260127910423372959508958623075504868050024596745764898391911840491751979137754285569322929158650633293662847946804103288689912448703763675283146621673012871254633533194377030250352611069840045415134955272748392055236606511070686666434713793829077446066550327910101531451946385737214613645748170194461491266844633773431240533128280594909612534236540180294450124045857836710476917456019320330431535665552636547040870437838779032764615135226472351624434801897246867481359469506817567335245881289458631537416077085846168867720092017860906347513209211053335253507262557801011639266118555313438653637371075030064607387581874483457828623195498929981019022320715548434332107732052489617642350395404755423890504937381594350261937829486524485402965632102513089813147252636164908927074556868101017437729528091700077649329223272651615838675582502923098776173377500176553030684012174138523824027624873460953418560450403526943320923007675293772815222310622596916312130170900840914359699724142187605113759238807165528611299893978920127174088667077247020868858916613156190749631732507898812966829075392501054922214795473866137086796993269026436078713567018501245064790910252485103579415949255960815644435286791005741688206523554442483484169793228729190626747645974218783364588148917010938772964676984515572500244588221010082228802542256750847022364651654297058739542134033617978813278974706722225647820102505492339549909946638051759021027164742358917
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 23 of the certificate chain of a 2,626-digit prime (196 intermediate primes).

Certified number2,626-digit prime
Certificatedownload
Certificate chainshow step 23 of 196

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009063550320 --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":1100000009063550320},"decimal":true,"detail":2}}'