java - 生成两个不同大小的素数

Question

我有一个循环来生成两个素数，我不希望它们相等，并且它们都需要完全是“数字”数字。我可以让第一个素数(bigInt1)达到所需的长度，但第二个素数(bigInt2)从“数字”到“数字+1”不等，我不知道为什么，我花了很多时间查看这段代码我只是找不到解决方案，有人可以帮忙吗？

...
public static BigInteger[] bigInts = new BigInteger[2];
static int digits;


public static void GeneratePrimeBigInt(String stringDigits){

    digits = Integer.parseInt(stringDigits);
    int bits = (int)Math.ceil(Math.log(Math.pow(10,digits))/(Math.log(2))); // convert digits to bits

    // Generate Huge prime Random Number with 1 - 2^(-1000) probability of being prime
    BigInteger bigInt1 = new BigInteger(bits,1000,new Random(System.currentTimeMillis()));
    BigInteger bigInt2 = new BigInteger(bits,1000,new Random(System.currentTimeMillis()));

    while (bigInt1.toString().length() != digits){
        bigInt1 = new BigInteger(bits,1000,new Random(System.currentTimeMillis()));
        }


    // make sure no two bigIntegers are the same
    while(bigInt1.equals(bigInt2)){
        BigInteger bigInt21 = new BigInteger(bits,1000,new Random(System.currentTimeMillis()));
        bigInt2 = bigInt21;
        if ((bigInt2.toString().length()) != digits){
            while (bigInt2.toString().length() != digits){
                BigInteger bigInt22 = new BigInteger(bits,1000,new Random(System.currentTimeMillis()));
                bigInt2 = bigInt22;
            }
        }
    }

    // store results in array for future reference and display results in RsaWindow 
    RsaWindow.setMyLabels(5, "Here are two prime numbers, p and q, 
            of " + digits + "digits");
    bigInts[0] = bigInt1;
    RsaWindow.setMyLabels(7,"p= " + bigInt1.toString());
    bigInts[1] = bigInt2;
    RsaWindow.setMyLabels(8,"q= " + bigInt2.toString());
}

Answer 1

BigInteger 的构造函数使用以位为单位的长度。每次将新数字从二进制转换为十进制时，十进制位数不一定相同。

[编辑]我之前说的话毫无意义。已修复。

一个可能的解决方案是去掉 if，并将其添加到第一个 while 循环中:

while (bigInt1.equals(bigInt2) || bigInt2.toString().length() != digits)

然而，这似乎是一段非常重量级的代码。您究竟想要实现什么目标？