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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 #1100000008793171705 2,494 digits created 2026-05-07

Value

8405913719424894712917558225298603956227353358395461138834431011990578151109876297853109637776221145389969535367484591769350992884598728618114108221835655786806965789618834018228227726911601351487847475434690565626574550778817205411176040646097536199271962342138582998147826567801334437952915081077353406770118767146083876193341319499553475976900919769456022041774640560725835634423001243019594140820002811698108783569112877629790123558080962430231999756097632657237947816212540522719412195586631147190140429361064709906717058541070125091038856488057305215310563557048897774037660070625390815601583330105260700259245431267735080331561887220465835743294242423670767477786103380942086521079693065956341662446556630487720974791486473832438939289580290798235125867458841818227895799009097065331446347205290758602008078338298454343700518941127552052619773192848661415664513025845024554896303997946631805695733007932989067339020384748699452591940264222970490917200643327018847541179695984743411891190242381191894226360480239001635864844416868784064883250784029372225158635769034130110161313634010709672140688078941839570942859546185492089070191596299439708778784280177227625215607542568551810437242610046580039940399117409841005567154502387310377713841538731767264842037850234197240461911329743529161374036985053635144264598585992847244358218907129413633106595429454819332494032203706738997265603442419250397510136680275968123095943997625733863776006803210668042210443370651536623120070917504689039688773541557923036141377854855377610151078182656665350399080377446295600763004077411234158733114651360955103670338461055202639296767593796129549756119007707738936186889692415262911356645634402610754143734815288506710552765695952524545355688714353096280711327958636749219144871030711180107493727315561873593033598025822379322218186122338317882571596198655552346722582451725820794750759454876095362277433683723094931688305864936884087148314239227271048243528707236787743988407844205491151364019971728752577111803264170053476222292008561428363013711698824315284072647571673094249373896521760130497636606736654892440138155344791448852379244605416976601654965826938497619407028218509344775573802828430724332889002906724142703739021616429885030564471964494576999109317104458578626217156572110661208843325871247000441892019838247645198044191885612957024855280967755184913024476238534045858506195111623892378429961566637288465082630509691553702692668591570983785680023852763933100749346085660686340291707178513
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 85 of the certificate chain of a 3,623-digit prime (236 intermediate primes).

Certified number3,623-digit prime
Certificatedownload
Certificate chainshow step 85 of 236

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008793171705 --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":1100000008793171705},"decimal":true,"detail":2}}'