ISBN 1557509448 hat failed the check­sum digit test.

The following 15 formally correct ISBNs were determined. Starting from these ISBNs the value 1557509448 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
1-357-50944-8second digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-4575-0945-82nd and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-5075-0944-8third digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-55650-944-8fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-55720-944-8fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-55750-944-1tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-55750-946-8ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-55750-948-49th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-55750-994-8eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-55753-944-8sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-55780-944-55th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-75550-944-82nd and 4th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: former U.S.S.R
ISBNas­su­med er­rorCatalogs for checking
5-15-750944-81st and 2nd digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Brazil
ISBNas­su­med er­rorCatalogs for checking
85-5750-944-8first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Sri Lanka
ISBNas­su­med er­rorCatalogs for checking
955-7501-44-81st and 7th digits were swap­ped. amazon.co.uk amazon.com amazon.de

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