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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 #1100000008677877915 1,066 digits created 2026-03-11

Value

8481155618360179725902044445831949983771376868334271132963134744952250037713794740293735121777401598981300261715568495611463489647891452526044522619557930928894084384244782755226047928546488580118141296042692872879804635220982643099127567854269909343205570783981727872482137769556079149386146814914038325979913709776205744921479535954443465354934228725897068814291325639589193790162926202839193671254908308906736540398017489813853485241653541160516348954570998680668592205713918795754787826300431150116830634491527421080966759134721931213227453771341259308252771819513899908332802660533094861395551803133642347175465022810742070285661566975291084695342006866119957696998812324603420600179529291074050372915385750526591519908957971468594630754092021991795749458732889755180444215937575193644351169105059570854441978706770945734891770310550204061513385899651898166005925555436457213564848146686268268599192271956876944865782380130885580314809250552258432896964484605205852072739326115161188676136355875897308518406406587010427451236882185994800850929122867766907369393
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 63 of the certificate chain of a 1,740-digit prime (182 intermediate primes).

Certified number1,740-digit prime
Certificatedownload
Certificate chainshow step 63 of 182

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008677877915 --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":1100000008677877915},"decimal":true,"detail":2}}'