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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 #1100000009058004381 1,658 digits created 2026-08-08

Value

63850749857590439891278353081703649912208545340465675288681640161753725109845613719842167897056819721532114264027380896692227041766612910690526459695568378209400669986098876908583917050958037238085679006147924660123979757437937388417013520831015210479354891392896182645014564070797376152107211065982311080825698900197043953900105671975230233586486246230529124870250318947562866937913379625806330558028516138666514186559685333402383044114665992961223234346877754211360222950351771433587231027596103696742121881428667081869502927295059036671068801126942783255673276944458404970334904848148405535234660678593774563570887521435808713630161710308081519743914503853542362863419771194790341626137416746001865363153620535529348802819131879248378369363020080255344770368863642710902930108016806389288204236802284341063886444207255050063065739171621055111835965046252666184682693605181790698746319149729446181029840334952194760059776412222746674612135778182396761482952166137391173056099674799022167876906733117876158171229367047203163884988975453961695124106712829526964339370529295738590535408575769535969304177780936124679731868148729936870266360227548406914743990745712085152157930733187066260806120711270940134206803188927185798661194866940141521809784690535977837082373744423763253373971618468094406905817221831285068901312900904155335608158580306561795994100438432947556982747902888909487466428614510160905244998254611151164014980242782752899272479689133825947404420128056890846704305272894621646790241100848291205379345375207358099226348709797237326039045882088995097887070420124115694269858659637720543925723206627078549837753242394277992766114914373845786447
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 3 of the certificate chain of a 1,678-digit prime (135 intermediate primes).

Certified number1,678-digit prime
Certificatedownload
Certificate chainshow step 3 of 135

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009058004381 --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":1100000009058004381},"decimal":true,"detail":2}}'