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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 #1100000008680031370 1,261 digits created 2026-03-12

Value

1161982385131125128164141280654207520859795197265050793748100462697102537154931636871070018408532436726390597100102337071986108447010517145963587063695509687051399657611579785520109883408401258089810182667206996004753411396653535447360450786644833569390968980138347915369288373540185175713268731357426278307265435270018305078193203032456322745828695002010603255734159736814516095241931452969931061066661887799848923347466320892613928033616468612950946111496588834980007437433044628773453100962432321030693674093022140865856011800955635790845045704338202526120105213013266835268392947427792988525886654054054564294256907311541528963432029257255258759237116308420823362908748734123387130733234439463773563117684999873497611464246300262283444669671522048911935581201542204473963893126552559506577245206975424020728371178872221854536216095874367458139371550145608362632250037330613916213950357832848613323322071057666060926825745147177335623504557705687221767247185334935791494105025414488425530818104259984886986478346718499696732513255237446228585857641871534967808951617099801510427467345501124572302585010325141072049099909528218068154317289221065237695440480727385773043040079805682738531591928470985723267861441856504539078706796946277670369385567255803865667
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 73 of the certificate chain of a 1,975-digit prime (206 intermediate primes).

Certified number1,975-digit prime
Certificatedownload
Certificate chainshow step 73 of 206

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008680031370 --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":1100000008680031370},"decimal":true,"detail":2}}'