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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 #1100000008799243775 1,155 digits created 2026-05-10

Value

762821280948011406326977764326369275851878099171076085087257462844912249315474679607551422498613504611490052962621368103753331942496978076299696529596375905344208574264156824422451964387394106553098514393258623182450997482215328518727291964482005043815840073535197233322240522206557462031314677212894557413306866344787681440382555059690771321743075867057621147302286074522663423912880791326489749576006915028452339752251023547369235837320052415921074048800913308111727282947465554363401357611722971036083374250994431367809324143030633105327726922285352710572715076647871151323136475571872097505283134787286732567651787529201134249163942868953568486364736628296976754554139834499015517298622505649371690283528487692510842595693052969695723593971941617752673181776563768270898660425802270302973916349465656132999672460018154846982714985383010198357570813079353555420474872966294748489938379285031372087056057264734637738561792810971988753157235823156942784632150863766450447031804150813841552473812845790671700898935786873249676566971290380335049788915989099290801330855191943201000442020385958597431684232522854984920157275088113519097600240037504915340689
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 178 of the certificate chain of a 3,883-digit prime (240 intermediate primes).

Certified number3,883-digit prime
Certificatedownload
Certificate chainshow step 178 of 240

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008799243775 --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":1100000008799243775},"decimal":true,"detail":2}}'