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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 #1100000009055124100 1,236 digits created 2026-08-08

Value

148058256344139417989551484241222458221748998786651983158123163496740488108981526509350561789684975160880191267618839820709480013394820115307291796571392140181655295438168679691726015484810630751814285415490379433615726259487621731847758439571542396887929386637674167665079599876101677151815308513389089535056941521847991121094144915894141691513511082037520632102077957667998859439354181772342010424635873170502700527420083864001332678139401065934668930581370484009970518601209440820263857017594079227387530002187684694400997478597520128007765546525585978143816333515327941107833860874565014719934539521526087475367583646795966357119453290875300360017807219313970609153437578495300952036011806455602385114053663814505519061795029637113361709557660554834437072698264282959970939527146598838742537399631634372212403368411470446453188252624267053241258976278932955554378253997159715675579752309786212601715210347671234112866458583775139768593779932970074855402426915134899945329514702147129750682118140874714693131564911648173894627176584911569739251672963786656342540268941681904439975819995123301940710661008639194402740207758518686370188941813502066739765632163697311909205705221407922915425739093072622580886487969171907296922668308397
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 100 of the certificate chain of a 2,419-digit prime (185 intermediate primes).

Certified number2,419-digit prime
Certificatedownload
Certificate chainshow step 100 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055124100 --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":1100000009055124100},"decimal":true,"detail":2}}'