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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 #1100000009061620651 1,636 digits created 2026-08-09

Value

2786887746745291804371002542434993830764368795316606858105088533529202697489256204761603890249687001979819797407726178118316321893713054437213355579110576851323347464340745603648616425398300973461437964414678636863959599763959191676267666793063703510786053310453498771342969716982474303933916825940186799208574346687388143724066771957470467370854486152690296006994055792704686611680720143418296510769438594387610790754150002314187445386171826430144694209679704545072866128156158919098157286160371335163685825458031583031290744655634080826506640511482548461988008363354275318643874020681754529228090760386468033847660119716688186852218560429709594316334999078045294259273942302462509863109336970561170031529034506648765826433832306056597874955755601868219549637583125163152428772055114671007025272161026161847794895955791154861800241684770463463186272981313922063016627843071738569727187679735391365811502486477551266693907156890258735102593855069969962625801780169218082897128267561645338606648370488670615564248398743364764572186114907440520749714005841788987594016660212198358734840737193534523910769114502016083301326151919395480681797638492154805933985803370352788880378781175689357299573507313231569729977537539121349773611386342295337175776783097676139586542054623212480734144880489353419842543434115190126828041551536901893347752704510095768435508070171758806343748822238563761455080902107184611156011675407404451658032911120821062016708423129631372757227313064329220366634453587610427080725209235070510733474076965021280184824177354213925519349700178786500030383735789384138638417828598741524607881020565279085102217027056737601
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 67 of the certificate chain of a 2,562-digit prime (190 intermediate primes).

Certified number2,562-digit prime
Certificatedownload
Certificate chainshow step 67 of 190

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009061620651 --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":1100000009061620651},"decimal":true,"detail":2}}'