ISBN 9740056508 hat failed the check­sum digit test.
The following 14 formally correct ISBNs were determined. Starting from these ISBNs the value 9740056508 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: French language
ISBNas­su­med er­rorCatalogs for checking
2-7400-5650-8first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Mexico
ISBNas­su­med er­rorCatalogs for checking
970-40-5650-83rd and 4th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Thailand
ISBNas­su­med er­rorCatalogs for checking
974-00-0655-86th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
974-00-2650-8sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
974-00-5550-8seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
974-00-5600-8eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
974-00-5650-4tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
974-00-5659-8ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
974-03-5650-8fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
974-08-5650-05th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
974-10-5650-8fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
974-605-050-84th and 7th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Indonesia
ISBNas­su­med er­rorCatalogs for checking
979-005-650-8third digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Montenegro
ISBNas­su­med er­rorCatalogs for checking
9940-0-5650-8second digit was chan­ged. amazon.co.uk amazon.com amazon.de

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