With a lot of luck, today I found the largest CC3 1st
kind:

3020255265*2^20023-1 Cunningham chain (p)
3020255265*2^20024-1 Cunningham chain (2p+1)
3020255265*2^20025-1 Cunningham chain (4p+3)
6038 digits

found using pfgw and newpgen.

which is also the largest CC3, and largest
3-simutaneous primes as maintained by Jens Kruse
Andersen.

Thanks.
Jiong




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