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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 #1100000009047454957 1,048 digits created 2026-08-05

Value

1638543769447559449147372860031391376679108775451528940764249720668228077952379036043695978853252397007137343541384718789662588752926332068919867095198441897219812520215388515190887798130353071740963779363853306881385734109824823413074907988687940360823913755228094925285553806187402210106927521237282746689034624969495775329229430029222002945528728376598580426610794080677547144667176905327821245663598469781439793264487952678481205122750008792470592172332919989917314366438422368569088577164725932952005931740141445534998885701675727464037032952192082057780353689986341525771118175491444793595898676889702861297069174881682796561225793692411311687511787520717670179518744266699391331665049675195325129182545721730582367442551394713380344553001310496282506287701781552765556201705052737365775682205648459868433874790364541033612308723971840778303126871867812389093446311582303254136122487349921453577219605128143784143870497717181503276345813702945749533530498363615495498024242642784972366068633032659929417099579386191635925854807225465457665349
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 33 of the certificate chain of a 1,457-digit prime (118 intermediate primes).

Certified number1,457-digit prime
Certificatedownload
Certificate chainshow step 33 of 118

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009047454957 --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":1100000009047454957},"decimal":true,"detail":2}}'