Lightning strikes 3 times (?!!)
 

On a roll now...

775784295*2^334420-1 is prime (100680 digits)

One of my cores also just now confirmed previously found prime 115029915*2^334568-1

Those n=333333 primes are going DOWN baby! :grin:


Gary

20152491645*2^440789-1 (132702 digits)

One more submitted together with Bliss :-)

91*2^633169-1 (190605 digits)

405*2^516432-1 is prime. (155465 digits).
-Curtis

775784295*2^340381-1 is prime (102474 digits)

Another...they come in groups...
 

775784295*2^341106-1 is prime (102693 digits)


k=775784295 is pounding out primes at a ridiculous rate. 50 primes from n=10K to 200K, one from n=200K to 215K, and 3 more from n=333.3K to 341.3K. Remarkable!

83*2^654488-1 (197023 digits)

141*2^619742-1 (186564 digits)

2123*2^476034-1 (143304 digits)

269*2^628904-1 (189322 digits)

52654604145*2^455655-1 (137177 digits)