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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 #1100000009053848215 1,176 digits created 2026-08-07

Value

919919914122703755832063206047880059475363644397758644420121251492047604825671677600478072806113236806765160792515441312490534419041878960052515297846468638310396771719693274894454794703616696400615120857829933729022838838932974542214453985649235495150784144341809687801294454308572681677908649359619968726805978202567330556653243645476929914290813206877012529396255587967913260332070591826293908175882059974237189236233873314875113818665135085543096838878466998360912450663496838438195000901628432675072561526493136213714831132399155771095706643845563712864666076680694897429730960143619962225139021955164306955461769978344915075230340020590454577824411203674011178175523277545101758457198800627041807662281560313759978834161063198065636300750134820465417644206003163186591880573296551198525905403232056487086693272041911678495551430744219317151340558853212570774690655251741239870122565688981544369418188301221908895037122632921055437629751740871362473982680035465405092352269842847462635962644672555866164903006210757705259709106144079025843068958119184499558810960114195005138983268884994067645583425061115826393986733199889710979665510647835627513923779469264507204503441
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 36 of the certificate chain of a 1,611-digit prime (135 intermediate primes).

Certified number1,611-digit prime
Certificatedownload
Certificate chainshow step 36 of 135

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009053848215 --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":1100000009053848215},"decimal":true,"detail":2}}'