取这些数字,例如：16468920 ^ 258,这将导致数字为1862 digits in length.@H_301_3@

我天真地尝试过：@H_301_3@

unsigned long long result = 1;
for (int i = 0; i < 258; i++)
    result *= 16468920;

…但结果输出0.@H_301_3@

然后我尝试了：@H_301_3@

long double result = powl(16468920,258);

…但结果输出inf.@H_301_3@

finding out about NSDecimal之后,我尝试了这个：@H_301_3@

NSDecimal result;
NSDecimal number = [[NSDecimalNumber decimalNumberWithString:@"16468920"] decimalValue];
NSDecimalPower(&result,&number,258,NSRoundPlain);

…但结果输出NaN,所以我试过：@H_301_3@

NSDecimalNumber *number = [[NSDecimalNumber alloc] initWithInt:16468920];
NSDecimalNumber *result = [number decimalNumberByRaisingToPower:258];

…但此代码引发NSDecimalNumberOverflowException.@H_301_3@

关于我应该去哪个方向的任何指示？@H_301_3@