--- Jacques Tramu <

jacques.tramu@...> wrote:

> >Can someone calculate the length of N= (2^1660693)*(2^1660693+21)+1?

>

> >I esimated it as [(2*1660693)*((log 2)/(log 10))] as someone suggested

> >and arrived at L(N)= 999,999. How inaccurate is it?

>

> GMP gives : 998838

Maybe it does, maybe it doesn't, but it's the wrong tool for the job.

Calculating the value of a simple expression you're only going to find the size

of is lazy thinking.

The size of a^b is b times the size of a.

The size of a*b is the sum of the sizes of a and b.

Phil

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