ISBN 2723458054 hat failed the check­sum digit test.
The following 12 formally correct ISBNs were determined. Starting from these ISBNs the value 2723458054 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
2-7233-5805-4fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-7234-5105-4seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-7234-5508-47th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
2-7234-5802-4ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-7234-5805-9tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-7234-5850-48th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
2-7234-5895-4eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-7234-6805-4sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-7434-5805-4third digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-8234-5705-42nd and 7th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: China, People's Republic
ISBNas­su­med er­rorCatalogs for checking
7-223-45805-41st and 2nd digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Denmark
ISBNas­su­med er­rorCatalogs for checking
87-23-45805-4first digit was chan­ged. amazon.co.uk amazon.com amazon.de

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