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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 #1100000008766976705 1,936 digits created 2026-04-21

Value

4213099817933640980888795246672928172869865394572400009266961377792103939478782816027253502384436172442927327963143252373283891280189463346650905247306932436213944444969091634824593073018414292412351588428880662860756892685431401386148314292099924604475797302727446068259006709438717811628728803613496125949156877011336212773604639959980757739319140854004594900977182041141564380731029307961030959587388466040007033195548086095687625047670388381640908405559511019673690192259072817891628228176874915642616657415317688389898243754092865112282282029463483148933336868653726655153132827853805929165224821530611406641523084854231096039937930842283412115295774402456539116591825985145687841952066809508943353434575921345359313197286771249192202875412392748898740242175500313762684215132187888766706702674603057179881558637459203339588810425872912096234466567971636536303078716641700169111513464356139996072721097345436360782986533772921439638841274159748382678120088261121511807022280255210334687194933317002623043349345322665462616199415381595787286759630792105407530350444035399688127132011829283968637611512510331851636227781986825650962123227384216524479183827916899828740819063500199102581295830358429229809560343763945276127042119441401018190590748766684837456817775832474574353896507030928385252864273107348171510531191187873139711195977378971883636553334947477924086248333108920212867749707903148717398740349664310464099996551021589459033702869786950371595055900957327346232171930589302324077139812407120363309130716265656950037061020208719165908288184904384184927386744807821590982806861205666088581671893790113614212427652511603284515558478172236533880303251191856645109448440291753772723227537803412778093420785184037699387025319681479023465103087696929432380304573634899720994354222239811601597621484629788819222454061936021463666552610441918467163938584590645800780370600072911051430267631295975615640898599816508616933006089099
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 75 of the certificate chain of a 3,127-digit prime (189 intermediate primes).

Certified number3,127-digit prime
Certificatedownload
Certificate chainshow step 75 of 189

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008766976705 --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":1100000008766976705},"decimal":true,"detail":2}}'