- --- Jacques Tramu <jacques.tramu@...> wrote:
> >Can someone calculate the length of N= (2^1660693)*(2^1660693+21)+1?

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

>

> >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

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

() ASCII ribbon campaign () Hopeless ribbon campaign

/\ against HTML mail /\ against gratuitous bloodshed

[stolen with permission from Daniel B. Cristofani]

__________________________________________________

Do You Yahoo!?

Tired of spam? Yahoo! Mail has the best spam protection around

http://mail.yahoo.com - I get about 6.5*10^999836. This would indicate a length of 999837

digits.

- David

--- In primenumbers@yahoogroups.com, Phil Carmody <thefatphil@...>

wrote:>

+1?

> --- Jacques Tramu <jacques.tramu@...> wrote:

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

> >

suggested

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

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

job.

> >

> > GMP gives : 998838

>

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

>

find the size

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

> 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

>

> () ASCII ribbon campaign () Hopeless ribbon campaign

> /\ against HTML mail /\ against gratuitous bloodshed

>

> [stolen with permission from Daniel B. Cristofani]

>

> __________________________________________________

> Do You Yahoo!?

> Tired of spam? Yahoo! Mail has the best spam protection around

> http://mail.yahoo.com

>