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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 #1100000009037425809 1,203 digits created 2026-08-02

Value

129488480924398500892970898212301489738349091187283080263568003734038047126020941858753357024131848691521347450384970361469391151646341938300485247085763938170825094143228103420628502477217877926702360433511195224089222605629171560419089800898374705330248859227488200024189163066859482612692004398402759401692386994992433276656056400807577482412968757083943192152415973494352204175423404196064553876509106924075843581063115376939920025270863263069672546462152662362629561045840946053935416795696593051794811110085351412185260647477551995424376647286616263079255300990888111649894233196048254843807406141871608513658540413946358570150400394601837610290599326074298641965469609302128391891855046960029505484366501478958687374858515867003152342887020723921405909521210518161781668334048167095356820465621246564334696463412980911990708207241313713448996492051518605358519887241440100985368741355320456966334324587600986479437198845527723524855018592948895960361242669199153408702779523520805780311372110503232693933228178364113165773448801788032450010262878271138837753626640873993549366697406157929117333480640064660062341446965514039255724949269739343067512005190256883281316890587324632787991412131077431
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 5 of the certificate chain of a 1,245-digit prime (96 intermediate primes).

Certified number1,245-digit prime
Certificatedownload
Certificate chainshow step 5 of 96

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009037425809 --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":1100000009037425809},"decimal":true,"detail":2}}'