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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 #1100000009083570261 1,848 digits created 2026-08-14

Value

245462302183484191638183292988424669968959898901684428221136734213541902974866353644226495633675948364456822896030622222619013646602224175603986536928380651862864609350569764788741734910167877620496976921506901763741786079409850726772338702396907296149540878267320681060590916741021067814824814793057555595707468043646272716756255090922210375784230441558502929318216875735857242012087372795674039885959183065729720624481342824431527133418053804546536984436159482485752814920731692782804368005949762377039814317719391255127574674447101989511985844973272598246136444150476768854913122900431418151169824890490357828104542071652731874612556167103881660836736630145115833602083317716578890202866452730033932324326213030972737857408265393364767954964159000570332269174702221221677894417255160502245816868390388962235492047424734878815192700824944123330380649087924526786579080523752973011844437988647301457343487066678456114479982952820771738873130481259849045318068350973588739381460741157115652015093769527592726764947550891532963930477782685291377354575307863640555456871414168362881251608421442013825454948602713469242320679774332860110866154019534422570176451299724624176231925993201267645202603226963412336142680790786048522003948133979583942341103860360450356339445363097606119347390583817397103486487440161195531729940235730584777995327811641486258534374732546804498979259263471378236365651815925356093700699231617279344898842654235450706830294610347342266290779519810634354739827431023423689007625570839068435932673425141630481597015915697015049596475260365487599281291472090875858404744803902908343718103025191132918173293422676601048390233682779017122301081471567741527246861127203820492217783993364476341962406966081481178231571139484040706814988040508136515106757969874461560199454060217732296528032501709888298379147696709236257772771727607
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 4 of the certificate chain of a 1,891-digit prime (153 intermediate primes).

Certified number1,891-digit prime
Certificatedownload
Certificate chainshow step 4 of 153

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009083570261 --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":1100000009083570261},"decimal":true,"detail":2}}'