As for the book number, this is compiled by the National Book Number Center.
Such as ISBN 978-7-107-18617-2.
978 is called EAN. UCC prefix.
7 is the group area code, representing China (Mainland China).
107- 186 17 is the publishing house number and publication number, 107 stands for People's Education Publishing House, and 186 17 stands for the number of the book in the publishing house.
2 stands for check code, and there is a certain algorithm (from left to right, it is 12 bits, odd times 1, even times 3, which adds up to the product of 12, divides it by 10 to get the remainder, and then subtracts it from 10) to check the correctness of ISBN.