Hello,

I'm glad to announce the discovery of two big (most probably the

largest known) primoproth prime numbers.

As a reminder, these number can be written like m#*2n +/- 1, m# being

the primorial of the prime m.

155161#*2^2405+1 is prime (67961 digits)

155167#*2^2405+1 is prime (67966 digits)

The whole job (PRP test and primality proof) has been done with

winPFGW (1.29), by keeping the exponant constant and increasing the

value of m.

During this search, other number have been proven primes :

17#*2^2405+1

947#*2^2405+1

977#*2^2405+1

2969#*2^2405+1

31907#*2^2405+1

To my knowledge, these 2 records cannot be registered in the Prime

Pages, but at least, it is shared with all of you.

Best regards.

Didier Boivin