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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 #1100000009053591469 1,802 digits created 2026-08-07

Value

28656258902967214605743930652988292793854026951276805294213518794484629161010007351418016115655296314927690981431174801734913748773740013913788712309267274313305538310290594668717063754320761096764649472144690629380270648747247474908916705740637253995790275516703064683059062234564136390238915135858635503510278707528685468444162779568883108101231508016379329981383302394692388960555843363969195239166377809878948370036631787204665909314876643493042478356131799109516696468011239080646392046478759308583204354226207404142775274291746180259686592031722679071140342360756762299878630324183281130295674700973987959395365697434714447047218657673019342989956419367263307813063979578057250101185974609414615118770161658567194582096131554014908399346981033113987975057286004658709487591845733042001229728635927055624578518370972163661784642172257895995696563655087113968907291864085475214701550785914672233877207161462785063622388742009220660144452001549709360133304268880428653555352923213036081689755236519767489745223046115028558535903829292050952835031824080066173020578606242210603029352215723488989594297653561352990438010980220356710823382151307257847038860675337532901521445902906927097369141978271945935454823732621343645347571740221276360369400063982607385050572153182611126921698557357567580271154766541293975221413523655428068032340595169550333561242728920773993926742914742223355426499656245962573301321909409073062348118346004200568638337813633340408534779903066964166060281387225096702685935653504143134090934760859086647127286638631240555665176013213057254507425797649313783186316238949546547746962193068745440839039820810234061772501813086459670814134725203775976549748741626311722830952871968355968058717245238705720156483096913602322880955813513651596330372096298123500119385926197269589679
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 34 of the certificate chain of a 2,203-digit prime (166 intermediate primes).

Certified number2,203-digit prime
Certificatedownload
Certificate chainshow step 34 of 166

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009053591469 --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":1100000009053591469},"decimal":true,"detail":2}}'