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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 #1100000009040260541 1,138 digits created 2026-08-02

Value

2516803198098970308578551613021473667039793758266794188090568867104098046018257333707392242681893084833154486039841889461324581718708793968975578061919819770803303307552264455832566338606709118359009775078323846576587014059123806406193778216311392801838266873713056807932696540097940981538438587106603462750221198678216258741885697916031685277501629583697791297584193370293126871097588889059491310705121218706231708698270044509985675980838913671724912453539432941365349839284973933159565537844961812762595952539962120114282863272077285158056074777163638184858807523293998071272583717522385915119314689150655728361474431302148547649149609454961418995034655121314318049958961876539191110427387738730383064701373295320033449856743932764448757099456874227958015133972316869064423226656850486073073434161270107687965278748165659431017386143118110736434476331754941265203192192193988589228267863614876292661460428867885559789779994032397048416203460422203765571748735695278442545284771041968744590095908827092591210439917248846261833707792210080619811840168550947981558255712134437531454156236063772111952514308748810336349522986600046826936263
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 12 of the certificate chain of a 1,260-digit prime (110 intermediate primes).

Certified number1,260-digit prime
Certificatedownload
Certificate chainshow step 12 of 110

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009040260541 --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":1100000009040260541},"decimal":true,"detail":2}}'