ISBN 9645988142 hat failed the check­sum digit test.
The following 11 formally correct ISBNs were determined. Starting from these ISBNs the value 9645988142 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: China, People's Republic
ISBNas­su­med er­rorCatalogs for checking
7-6459-8814-2first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Bulgaria
ISBNas­su­med er­rorCatalogs for checking
954-598-814-2second digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Iran
ISBNas­su­med er­rorCatalogs for checking
964-528-814-2fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-548-819-25th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
964-5948-14-2sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-5983-14-2seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-5988-14-4tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-5988-15-2ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-5988-24-18th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
964-5988-94-2eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Malaysia
ISBNas­su­med er­rorCatalogs for checking
967-5988-14-2third digit was chan­ged. amazon.co.uk amazon.com amazon.de

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