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Old 2020-02-29, 11:13   #1
Detheris
 
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Feb 2020
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Default What size of Mersenne number ?

Hi forum
i'm noob this is my first post here

my pc calculates the exponent 106 949 789 is there a method to know the size of the calculated number? (I think around 13000K)
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Old 2020-02-29, 12:05   #2
ATH
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You can find the number of digits by taking the base 10 logarithm and rounding up:

log10(2106949789) = 106949789* log10(2) = 106949789 * 0.301030 = 32195094.5

So the number is 32,195,095 digits long.

Last fiddled with by ATH on 2020-02-29 at 12:09
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Old 2020-02-29, 19:19   #3
Detheris
 
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it's fine

TY
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