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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 #1100000008729256609 2,334 digits created 2026-04-06

Value

496156727832986663617874687423581412573707942084121289958423160218441368811588134797167768927481212088208617212195120335842011338058457875321967536281342281475301067818196917139629752047830045170155202993037281694885226380887962858614334857220466818977447406782474340739667870310474570105901101776056087073994745154785917695685650034641115697030303338557818062416418611371349695966265044812876024676553545731227755746709811260520193673616731485462948969920964157713277925729345431890299929129662576233317828512686051272915803156234274361381850956282102454592574515750806132244324307716049074969784918703423927642692203875727856340506875547772059432166172685872258054483525234517226296460311975537852231036016135115906599978027826035961354181139069936376065875794887735413809608592098658250148809595388720295293245313761070173741690718934777767775458830475889719774988226532334720347591157541953151441476035189112747040112000770028598071542839871761771731024565362234772778682015820904821166881634913019092199725008767278902309347858100095373962454243220347715926564143889519316116599434006523364376571276838061323405514317394048714637308136848868310465022805166579471529640977515804495206739355728025063057475361570336491080825920994429525796738055623410056934707835537732162557168494028660321655217278533640822051283510778985416627292036043678615742417418946418980477385281383465083398427916497027480512517502914624021573733248154895849545177323135833545307144842090992578394222032017513823960950503745410508281486588501521391891630549601854568175746930200740698542142938162438064808935128869944089820291012902390185200440574102760955307739071014258317771253743994557450408223668991440738196186376179533356154055649066275696781297437755610888493004229621146240325283830877684025258001561220709000592296801226863208849555806540498344476773066295965278445585919513877165934928984644498755772822832748228029493284546347186222276290312917148319182697477531114362030263333725395516778514191442363127130915634054242481410473751552840051013832910662591424545448101083458786084747795123705995466504066104338961834650681372024069814188928215462262757805661146445193363887287818199335739725183343088885209198136165613546173677334681601909999612764229521909073831884971472094904764726974832485626371331656930718828776514110174851882798654751987
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 36 of the certificate chain of a 2,785-digit prime (201 intermediate primes).

Certified number2,785-digit prime
Certificatedownload
Certificate chainshow step 36 of 201

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008729256609 --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":1100000008729256609},"decimal":true,"detail":2}}'