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When I try to make a very large boolean array using Java, such as:
boolean[] isPrime1 = new boolean[600851475144]; I get a possible loss of precision error?
Is it too big?
To store 600 billion bits, you need an absolute minimum address space of 75 gigabytes! Good luck with that!
Even worse, the Java spec doesn’t specify that a
booleanarray will use a single bit of memory for each element – it could (and in some cases does) use more.In any case, I recognise that number from Project Euler #3. If it needs that much memory, you’re doing it wrong…