17*2^n-1 - Page 57

lsoule · 2010-09-13, 16:54

2650-2655 complete, no primes

unconnected · 2010-10-02, 22:25

2620-2650 completed, taking 2695-2740.

Retep · 2010-10-15, 15:13

I would soon like to reserve another range of 40k or more.

(At the moment only 2740-2750 available)

Kosmaj · 2010-10-15, 23:57

More files added, up to 2850k.

Retep · 2010-10-17, 17:08

2655-2695 finished, no primes (file attached).

Taking 2740-2820.

unconnected · 2010-10-17, 20:18

17*2^2721830-1 (‎819354 digits) is prime!

em99010pepe · 2010-10-17, 20:23

Quote:

Originally Posted by unconnected

17*2^2721830-1 (‎819354 digits) is prime!

Congratulations!!!

mdettweiler · 2010-10-17, 21:58

Quote:

Originally Posted by unconnected

17*2^2721830-1 (‎819354 digits) is prime!

Congratulations, indeed! It's definitely about time for a prime on this k...600K-2.7M is enormous as far as primeless gaps go.

Kosmaj · 2010-10-17, 22:06

unconnected, great !!

Congratulations!

Retep · 2010-10-18, 15:26

I'm releasing 2740-2820.

Congratulations @ unconnected we finally found the prime.

Blackwood · 2010-10-19, 07:20

Quote:

Originally Posted by unconnected

17*2^2721830-1 (‎819354 digits) is prime!

Could someone explain why Prime95 was in the prover code? I thought it was only used for testing mersenne numbers (LL), not for k*2^n-1 numbers (LLR).

2010-09-13, 16:54	#617
lsoule Nov 2004 California 3250₈ Posts	2650-2655 complete, no primes

2010-10-02, 22:25	#618
unconnected May 2009 Russia, Moscow 2,593 Posts	2620-2650 completed, taking 2695-2740.

2010-10-15, 15:13	#619
Retep Oct 2007 3²×11 Posts	I would soon like to reserve another range of 40k or more. (At the moment only 2740-2750 available)

2010-10-15, 23:57	#620
Kosmaj Nov 2003 2·1,811 Posts	More files added, up to 2850k.

2010-10-17, 20:18	#622
unconnected May 2009 Russia, Moscow 101000100001₂ Posts	17*2^2721830-1 (‎819354 digits) is prime!

2010-10-17, 22:06	#625
Kosmaj Nov 2003 2·1,811 Posts	unconnected, great !! Congratulations!

2010-10-18, 15:26	#626
Retep Oct 2007 143₈ Posts	I'm releasing 2740-2820. Congratulations @ unconnected we finally found the prime.