134楼的公式是从原式简化得出的,它是从第11个素数=31起开始适合于任意素数的,例如第一个例子——
π(31^2)_2=π(961)_2=π(31)_2+[31/2]+2[31/(2*7)]+2[31/(2*13)]+∑d =5+15+4+2+9=35
下面是不大于31^2之全部孪生素数,共35个(组)——
883,881,859,857,829,827,823,821,811,809,661,659,643,641,619,617,601,599,671,569,523,521,463,461,433,431,421,419,349,347,313,311,283,281,271,269,241,239,229,227,199,197,193,191,181,179,151,149,139,137,109,107,103,101,73,71,61,59,43,41,31,29,19,17,13,11,7,5,5,3
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