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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 #1100000009041853187 1,021 digits created 2026-08-03

Value

1515563163468260226964345124028229970437939455506928926195613195868135314699797831174226314527636898731344429607132405449372992597897161358394558781252808736409876709369727526228093355396651904158173982402251178169776249993427641898560107358576874592079787260537104622973382602445945733124484101135006621251290399109201234914280013831655853058028065458612684181625947118759041296800890361059863022397011048778973949054135715718375532707619333255343470970944226158746082445678322450657260108823441756343634224918760579962233483734270592314253863074813761554029797725817458249557052769379884713214327231098341969065085750911512576789114332395210815876981999526709986158124556947234643899724540031417184873779016300118989282823589323240919585334341914123312986884344804072233823082009220246719672617957624371514163177609844151023549791670727878019699957201159502453931490846386060669704313315734149445674726925798105156844206857564633608118148176007053643021740558347723293732400934460040055951335414336829982165192898261611
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 23 of the certificate chain of a 1,306-digit prime (109 intermediate primes).

Certified number1,306-digit prime
Certificatedownload
Certificate chainshow step 23 of 109

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009041853187 --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":1100000009041853187},"decimal":true,"detail":2}}'