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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 #1100000009122750587 2,155 digits created 2026-08-30

Value

2795426144073539040451333491765649187141890353513753069326949988974566179732735568971707707920870474597809620999367646886415097933892414057514883803156164003007665491233860727131793239799474042841157775395417814924645151040546381850586715719579075821767175195787891138399791538615523756189467816268311560971640446820292067973282653966030883680108143836660432810451356167317712660080145131608976178698321772349604877391938513935686427562032894875203604746753716035012228601599258112788882389197607598403649634579848749160400889905546765356956465242122146837294220541864756531098293463744834695310284093439685083629760801686636335618686114356170591967077086515253880540971328297689240162091193264092820816044392095987814792592033180390602990131807482614107034551363626455254385491691993510935758574011211063087408905242905114893205474440410142847293005290703115804035247053434139856228188802738248887896967272265291383135498357937307974414115542228513831054163986723052140078143659199850773701265451868487260452716652032189804441625013646606222577282373043330161112972397073702533946971511740930426532802071123612712825313245645894640975823857825071944413077426072349186857801241461318949835506736202034425976151443917486475676643177879945278173354941453620483079196294004501501127829525294807715595525584258508767917139678702006532141950507223485378745362677376887710046100873402213050465143793879668381774861908606388620472174987943456276406544928997957692630765413531191628113385220995029131744475883550177696088549360096219776774339783567202126568009496656848602899939726196436052181571113344090578006099069931718521553717997662229607928435921517159350603610888017087202353310086575828138282865339556834925796928267547278527318910230212811969462423197791616197581970090454880048029220084485357259357957860648757597399744380675796732707642833164948059970482945178124956824787341853413908182978776045483694255456503905262738744259475735975666423320509899525928367911634944020512569786295389948015726041165958134435475812063867169761354974463105931632716936997387995861293130003243457109067166477915613529332657849205791076994639235589714974959004277767461
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 9 of the certificate chain of a 2,256-digit prime (240 intermediate primes).

Certified number2,256-digit prime
Certificatedownload
Certificate chainshow step 9 of 240

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009122750587 --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":1100000009122750587},"decimal":true,"detail":2}}'