factordbrpc · fdb
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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 #1100000009028491805 888 digits created 2026-07-31

Value

156229689379591920698266287572440274271956692545236951998033923186973744202062880298628364429114225702276780186104660802779503831078857495503891067398243434279997130542980830364419320639954525242411965744188471108797707728509410850793997504985753859450881498574062079446653974725877809719703122702524363888682202542996599248499944351065182578590431903004741603856986389224375829575987091756783345566643988705881087828939102652144347044782823357976703308627803268322782440841666189302028486236608408788910434250284646491704787058632178267308863395610317700119966650290686431873772476100306039125039691046882386818800479060469777909875411760243796227501059041399686042745934703431014512933480501577328385483993193135161467938106879448929692201398451280415328291225995963891035259023331337341351813754184598566414492399245577684980372379228546587413747860859901413730304191324499247617421691
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 28 of the certificate chain of a 1,207-digit prime (95 intermediate primes).

Certified number1,207-digit prime
Certificatedownload
Certificate chainshow step 28 of 95

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009028491805 --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":1100000009028491805},"decimal":true,"detail":2}}'