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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 #1100000009066301427 1,742 digits created 2026-08-10

Value

20487515007357287789575684931127095026271546506699784823224626699740506809253842042477634886242484207595640707691680838254071055191594257454239307382213648708429317453675353467615338225759563423909426434252020396283334127627401708697839261012580358115616678805145964081815180419136228254428622521485094303076544796575374059931703203779352621800852232645238040683521197620633242381314281338979034143819779429452418761326664817102218168012296482611638883699364902287229184525740017145444802009631024035589010255170637266191555576048619362654909317595196480904185938546288589952924632055186310110864834826124036507506121827308497082255614179242338621660826432677463622770279497104300147857176441526363159026134448829077816345316335855470277205243737222523612864502506138401979722816890723786133865448614669837754759070551916092910311744871375417284267199024719006428627438466352453931070014841341236881316135817123615317391781055750000251682853184895236332861653550774665065327489704428458648495992192441815423148307257132032901559429912982748144509932339661450893949014114689926440431058709876229301200102961762337175822212778740762695496027208737539944542348391697943232753602398539407350855981539032733783852532765191266494639716565706200065941588072250378554842344967486102187991532194005182038601219765241155822141840954394925429669311880221094731675211617772143204563053912619992472671799643134934763094202183452697154951596798967010244386258819575490891541180904933288698330271154146414303075154735544774341824708870922264618877900665570954878061491673353881572134169224660392885974700806667216701140445468397578082036587491869739963715580137906581688907135866198961758130235284411560028841359220489043882730157862345431541672873451105543
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 50 of the certificate chain of a 2,399-digit prime (184 intermediate primes).

Certified number2,399-digit prime
Certificatedownload
Certificate chainshow step 50 of 184

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009066301427 --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":1100000009066301427},"decimal":true,"detail":2}}'