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by ajuc 5333 days ago
If the generator memory size is equal to seed size (64 bits), then period can't be larger than 2^64, and that's probably what grand-parent meant.

But generator can have states that are not possible to be set directly by seeding (like when generator has for example 1024 bits of state, but can be seeded from 64 bit int). Then period is larger than 2^64, and grand-parent thesis don't hold.