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calculating large factorials. 2^30! withing short span of time.

b_vishwajit asked
Last Modified: 2008-03-10
How can I calculate large factorials in java within short time? Right now I am using BigInteger and calculate factorial of a huge number like 30000. But it takes almost a minute. I want to speed up this process. I want to calculate factorials of all numbers less than 2^31 within a short time. Each number should not take more than 0.05 secs. Can someone help?
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