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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 #1100000009051100303 1,487 digits created 2026-08-06

Value

55861897329812889738869572817068535561928488540202578945639180636827801222903088587696132298240526789058184178196238501719410686989552661964874532880391439796709280857729960445445330179833286074366103491351929134600344411480256068899261568009502179134701245652294456575358638790144589641371648599722303688413637189430155352082249631643844998770321165161878757871624026469368230121782208003452062576350774566591291774906339544900008930177752852597496539478794218707068856418917685298060025085549015927916772729570812660743129792586516709452963209955731620098459581530941456524951218454035644419974139936269056221297931141681498126440178323468927382682767896161643102863692474599915099325795855961085702283285982285407194429611782600978605472772610999502722030699148641268146725756830320943968323472211890690706563309856826545777542499030912454598500088324070633692781134675017233381596850368079104394574063804198932070139501902543117056744633521091818422617222055203036467630576113957146710062363613668100621162200657330964460093944628549961373201974317066466851908230175479081833567781468246490179429332477267304607294638655041121520117272782919955966020514264322017304954471942995140465569236999907217774345461623201247248142154866791181766670949859310794996836408433833422200509897487153420017346422203010264747068796659943110135993604996164799665773373596430633753723856201257434876231503960900696450504630175050358730137459941421481761264172772832388265179485489523693852649094107511
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 5 of the certificate chain of a 1,553-digit prime (119 intermediate primes).

Certified number1,553-digit prime
Certificatedownload
Certificate chainshow step 5 of 119

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009051100303 --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":1100000009051100303},"decimal":true,"detail":2}}'