michaelli
关于大数运算的问题
BigInteger tem4 = tem3.divide(new BigInteger("2"));
BigInteger tem5 = tem4.nextProbablePrime();
tem4.nextProbablePrime
这行报 test.java:65: cannot resolve symbol
symbol : method nextProbablePrime ()
location: class java.math.BigInteger
BigInteger tem5 = tem4.nextProbablePrime();错误，请问是怎么回事啊？