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Old 2019-01-31, 17:59   #6
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Dec 2002

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I don't think it's feasible to calculate the leading digits of very large numbers. However, it's possible to narrow down the first digit in non-decimal bases. For example, Graham's number must start with 1 in base 3 because it's basically an exponential stack of 3's.

You can always calculate the ending digits using modular arithmetic.

Last fiddled with by ixfd64 on 2019-01-31 at 18:02
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