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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 #1100000009041886876 975 digits created 2026-08-03

Value

249730637394734677307926227459057292995004962676974965168440602988900974152275570692485966784534903900082815102502432421543427631941413568284540520843241183262807402255075915784667043294686831689084868989720401020300031612960440510252021722042010659120622704828008294830459942962772039097378004288629050940079977876103378387991455370886063557880858559576983449669691625738205570653397163347254500765552172469081040374211089167005730498068552242110220700218404232606437871762807404396800423956663687454542116709098630039172747216073601870686377697818665825727823946689768968343002234498479393052052254967487219785004560423378718656513289569868423189865134979739754110258579452249352845490568402767275482906014089562224050850799506676146172855470370890735164369143342131915380243189901908139330782253762045963768024014321175980400807723297655839448251657023199033617236799948741627897163595745021785400092452463319379743190556118616391333350695499152893390739445020832692252083
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 30 of the certificate chain of a 1,306-digit prime (111 intermediate primes).

Certified number1,306-digit prime
Certificatedownload
Certificate chainshow step 30 of 111

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009041886876 --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":1100000009041886876},"decimal":true,"detail":2}}'