Why is the period of Mersenne Twister prng $2^{19937}-1$ and not $2^{19968}$?

cs.stackexchange https://cs.stackexchange.com/questions/109059

質問

For the Mersenne Twister prng, wikipedia, I feel the period exponent should be the size of the MT array, $32\cdot 624 = 19968$.

How come the exponent is 19937 instead?

正しい解決策はありません

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