>
> Yes, they can and do. In the field of computational number theory, several
> participants in the Cunningham project have been active much longer than my
> decade. Sam Wagstaff has been co-ordinating it longer than that. To be
> honest, I don't know when he started. Perhaps Peter Mon tgomery (another
> long-time participant) can inform us, as I know he's also on the Mersenne
> list.
>
I have been working on a PhD to prove primes for ten years of sundays, Paul :-)
Preda
> In other fields, it's not unusual to commit to a decade or more. Consider
> the deep space missions such as Voyager, or the astronomers who monitor a
> particular class of objects for most of their working lives. I know some
> amateurs who have been observing particular variable stars since the 1960's;
> George Alcock has been searching for comets and novae since the late
> fifties.
>
>
> Paul
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