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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 #1100000008787409784 1,764 digits created 2026-05-03

Value

782262408947065194877059861186712786204609936926872243656984065185140046922113119401201901489746601208288766078351144532760041296217169664384845969836165761383390631053617539059829110492978997787221160946327040728956410673864547930043260116913564083349651237946424343282757802370266033431146017874437296573645154671988598725377045746656613064062358376123395631973793122409195704563846571909418310996612993636967949821084597272132978304610922104439943456580969065844656404928807218650731347440971146517866441257897422526516524359390769453615027539454225008006355006996647868447098266344736710996789743033109726663732537070667188573716691953918848907403412614176548466503797133630988018522343096653812755485221654344837676334696435348875207028826534198823835802257873780011485170046269347541458923957648684113001945231939682923423474259945625860271381446708495021280797384307846005755866962779240402659323385660871369600612067971387373105975102994393356782548331501665600314948419321736049561918614831504887741991737698814205623809368102513284309814142551738974024191888679751458378518399596327234825287158788662299030085946744359570618635396302354311779571954589461370998384763568492578578488089906689813355350327566696049745487612946212659718064331215202165834408847502679606979854164256304295690362872606371268939482301218489745438286307560190384832679209217172823930023320764501185131579335126572605172101000465485182797192056316780500669880033579118354038994098601444952308165693994826421670377655980539630130498744415393412770900477697688998044901798857343168311930351102615967294910379081335123128387511267176487741762097776315501439111320574048409322686344044634744836483857943847502428364341154903994248844001493225922121630819915285339122807851533344109039
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 94 of the certificate chain of a 3,261-digit prime (192 intermediate primes).

Certified number3,261-digit prime
Certificatedownload
Certificate chainshow step 94 of 192

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787409784 --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":1100000008787409784},"decimal":true,"detail":2}}'