Hi Mark,

I certainly hope to find a 100,000+ digit mf some time this year.

If I do it will be of the form n!2-1. (but I've got to find it and

they are few and far between). I will have finished to 50000 (106620)

by the end of march.

I then plan to proceed to 100,000. This will involve initially

testing around 2000 "most likely" (based on some extremely suspect

maths I have been playing with) candidates followed by the use of

your multisieve to trim down the remaining 48000 candidates to less

than 10,000 which I will then test. (this should take about a year).

I won't be up to the 100,000 digit range for n!11-1 (224000) until the

end of this year.

--- In

primenumbers@yahoogroups.com, "mgrogue <mgrogue@w...>"

<mgrogue@w...> wrote:

> After looking at the known primes over 100,000 decimal digits, I

> noticed that most are Mersennes, Generalized Fermats, or Proths.

> There are a few of other forms as well, but at this time none of

those

> 100,000+ digit primes are Generalized Woodalls or MultiFactorials.

I

> fully expect that 2003 will be the year that at least one 100,000+

> digit prime of each of these forms will be found.

>

> My challenge to the prime searchers reading this is to have a race

to

> discover the first 100,000+ digit Generalized Woodall and a separate

> race to discover the first 100,000+ digit MultiFactorial.

>

> I'll join in the race for the first 100,000+ GW. I assume that Ken

> Davis and Steven Harvey will complete (if they aren't already

> competing) for the first 100,000+ MF. Is anyone else game?

>

> --Mark