mersenneforum.org > Math What size of Mersenne number ?
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 2020-02-29, 11:13 #1 Detheris     Feb 2020 France 210 Posts 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)
 2020-02-29, 12:05 #2 ATH Einyen     Dec 2003 Denmark 54228 Posts 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
 2020-02-29, 19:19 #3 Detheris     Feb 2020 France 216 Posts it's fine TY

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