ISBN 8445124744 hat failed the check­sum digit test.
The following 16 formally correct ISBNs were determined. Starting from these ISBNs the value 8445124744 that you input could have resulted frome one error (error in one digit or transposition of two digits.) You can now check using the links given for the catalogs of amazon.co.uk, amazon.com and amazon.de whether any book is listed for the respective URL. To the home page
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ISBN prefix group: English language
ISBNas­su­med er­rorCatalogs for checking
1-4458-2474-41st and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: German language
ISBNas­su­med er­rorCatalogs for checking
3-445-12474-4first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Spain
ISBNas­su­med er­rorCatalogs for checking
84-15424-74-43rd and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
84-251-4474-43rd and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
84-411-2474-4fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
84-421-5474-44th and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
84-441-2474-54th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
84-450-2474-4fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
84-451-2444-78th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
84-451-2454-4eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
84-451-2471-4ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
84-451-2474-9tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
84-451-2874-4seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
84-451-3474-4sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
84-651-2474-4third digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Denmark
ISBNas­su­med er­rorCatalogs for checking
87-451-2474-4second digit was chan­ged. amazon.co.uk amazon.com amazon.de

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