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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 #1100000008787409451 2,313 digits created 2026-05-03

Value

383333058058428580370356120638607400010340094469344526414304291907481720096695188597234046562067062345692007416230256648563685538525402293718425114128783396086683469227608349139234733351318323261005793264506525687698635255209176425003780691839858564938285340443252057513634810734643032434645578660578219062114384003410919033508855680719814423040413996225303922581939605704994308681334008842977547761668128732990342786093475577987238416044110946897186314440291364696945057988429206137989336738052959751494947712896941411732508046839846322992194422916389188609703354157999234588334328294932127851353995333738554684015463793008198740728560745319175336922394537340183056226457257435644216310881585349744749768299674796364210966896798187840012399800125846416283092264272327804984418368926463125430155715286959942873542603994194934296684611719625743350079295583238921075165737926560542427598274225746611271732947320366366343560416713789610303145189159495259032851997112052292754787685689554847998790711614447048224637900810466427575299473237210860468253014219885371313632164960061016783120548975476464550349751405051763939796570265647858391737635226512370832883454546294758004933062118160434521046286600573462110146681078312913267822182360127852420358435354405318689532232632219111090098671338424611815107523436466766208308221796815827547372512537594839049157447855304705827905594126190269117105343912350520262191302122651154281184540761511543774611396988919020573478683885540479841547290906519365039901814460683187810964341002182051802958318922199058149600140327493776898963818590573418590147202474512736619153369154944821539886083425877801395445240000496007908444653362156336775581200935037947084824987202666135008266345951831619787436781715235799393295292041123908830055347634696817046479312443385236494604100183272542403744189782605263649276360352715638605757810823916133855805659026688336081611903737374845275788954029327573212844889042057080665442141049888764436985100844462991947146378115317029318074909353766055481341603693120370712636602684352392234438827511829167734790510891003491565443046668187939246383586785202344477766606245547386237191037632757827279864345849750971994174857984734967200236937113675648654874625007004476949296559412167461583035225428147179984645020651307451190162086758219479778987110183
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 60 of the certificate chain of a 3,261-digit prime (192 intermediate primes).

Certified number3,261-digit prime
Certificatedownload
Certificate chainshow step 60 of 192

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787409451 --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":1100000008787409451},"decimal":true,"detail":2}}'