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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 #1100000009084007820 1,511 digits created 2026-08-14

Value

35872644995136727429836404785574279127712216610477351115311055286393572479928445184013632342856307325732714204853445922854074116973140383867487187212362216465825288372865803661038669138598265340596007582204916014816736984336437440397102885878738146374085004362621420424733875991972549604845757592866496370823875210454904337677462080140225090094065097753893517011840103792947359525264371847050150962806675419602560961174771825062333602412741598454027744570677283882836507651698923680407512976254513190839147963164753668578586374143454469985415316899073586011418088501595128107041941428395204544325279914414656373999914674910239502355735905731341854290240281672849885104649136282319646070462268049779761894349155072322194626053286664998481872885713018441423620474761026606842648282985351824642552225969090176346124403840054711001412009902185953420123206869189768132750766018592262668838513897713034023200916714845229337369978981313695762475733842247145671444080700435606756767773205737506076075387595369548341333965123883832943199528890213811884092116896569440674178440006114253177697981897398335952082093484126572692668502683954921611497679848929291050141345373499676601582773167367399415086250266105997455558560815628236878473092332475443690602228042519605281778608452758988178990860266093829128367739969889544721487755406296150903113787720535435541708004957743584339824558310972548148413694050621735158333545894086678861363434992055863601294179613932541202853554029741133732201194780577785225246776494195055471
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 35 of the certificate chain of a 1,940-digit prime (149 intermediate primes).

Certified number1,940-digit prime
Certificatedownload
Certificate chainshow step 35 of 149

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009084007820 --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":1100000009084007820},"decimal":true,"detail":2}}'