h.ispprime

来自「强大的数学工具包」· ISPPRIME 代码 · 共 27 行

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                               *  ispprime *
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        "is pseudoprime ?"
        SYNTAX: X = isprime(a)

        a is an expression whose value is a positive integer. 

        ispprime decides if a is pseudoprime and displays the 
        following message:
        - a is pseudoprime      
          (a passed several Miller-Rabin pseudoprimality tests.)
        X=1 if a is a pseudoprime; X=0 else.


        Example 1: (correct)

                p = ispprime( 6220506277488749 )


        Example 2: (incorrect)

                ispprime( -34523454 )

_ERR_NR_019