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Answers for “质数定理的形式化极限定义是什么?”

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The Prime Number Theorem is formally defined as the limit as x approaches infinity of the ratio of the actual prime-counting function π(x)π(x) to the estimate x/ln⁡(x)x/\ln (x) being equal to 1.

Conditions: x is a positive integer approaching infinity.; π(x)π(x) is the actual number of primes less than or equal to x.

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The video evaluates the density approximation 1/ln⁡(x)1/\ln (x) at x=100x = 100 trillion, yielding an estimated density of 3.1%. It compares this with the actual counted density of 3.2%, noting a 0.1% discrepancy that shrinks for larger numbers.

Conditions: x=100x = 100,000,000,000,000.; Density approximation is #PRIMES/x ~ 1/ln⁡(x)1/\ln (x).