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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 #1100000008680400020 1,280 digits created 2026-03-12

Value

38234065040013431823641471060287832111541403777585845723007541363319946343037831636672708225356173031568171646203851724303723476001300806430950024777893619490556676139841981387190588132117365442334419847019267414335720139195331744374464215933037306620514614567676832143245949442390258496769379684819145944446686453253475122936630684262567422878574282081761795884370825326918297629729098251880471007863398970421365103189169792198965832210197365159629771969350595681225032604974652153339869600375250695331736990145028921540317309983459836571041540427723507606386903169163234725463944338183549273992174488789971663391008191173735508632266544559914241374200087495481216891304491076616957936286491198737993015417598018706509983978041966245445551263815916281385617015896027082905641159430222382996152724560955933293801742282774528899809310096339484657634683505650475885364471960855631557616950792201920120869002013885182857389588442867174845616148093469796789636135851431561053733097302433788875487776155564760377200500462575113876672528996756315978729178607908162004072548243967537305432366659186068507273176769075518674714261839679137887147932457551091565994483405853038216331363384358767555012227271977552994499167701378581314663575854151596218210109693040992991261849576082746753939
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 74 of the certificate chain of a 2,029-digit prime (206 intermediate primes).

Certified number2,029-digit prime
Certificatedownload
Certificate chainshow step 74 of 206

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008680400020 --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":1100000008680400020},"decimal":true,"detail":2}}'