ISBN 9781846940 hat failed the check­sum digit test.
The following 11 formally correct ISBNs were determined. Starting from these ISBNs the value 9781846940 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: Denmark*
ISBNas­su­med er­rorCatalogs for checking
8781846940first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Sweden
ISBNas­su­med er­rorCatalogs for checking
91-8184-694-0second digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Netherlands
ISBNas­su­med er­rorCatalogs for checking
94-8184-697-02nd and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Thailand
ISBNas­su­med er­rorCatalogs for checking
974-18-4694-0third digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Nigeria
ISBNas­su­med er­rorCatalogs for checking
978-182-694-0sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-184-624-0eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-184-694-1tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-184-994-0seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-984-694-0fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Argentina
ISBNas­su­med er­rorCatalogs for checking
987-1846-94-02nd and 3rd digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Morocco
ISBNas­su­med er­rorCatalogs for checking
9981-846-74-02nd and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de

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