77777*2^n+1

[Alex]

Hello.
My next challenge is 77777*2^n+1 with n = [1..25.000.000]
NASH = 374 (low weight)

Sieved up to p = 1e14
Passed n = [1..1.000.000] (8119 tests).

77777*2^15+1 is prime! (10 decimal digits, Trial divisions)  Time : 0.282 ms.
77777*2^103+1 is prime! (36 decimal digits, APRCL test)  Time : 20.084 ms.
77777*2^223+1 is prime! (73 decimal digits, APRCL test)  Time : 245.466 ms.
77777*2^1063+1 is prime! (325 decimal digits)  Time : 65.969 ms.
77777*2^34087+1 is prime! (10267 decimal digits)  Time : 3.796 sec. - First found in 1999 by Pavlos Saridis

Confirmed 5 small primes.
No new primes found yet.

[kar_bon]

Your edits in the PrimeWiki for reaching n=2M is not valid, as along as you don't give here a reference and a resultfile (zip for n=1 to 2.0M).
Do not reactivate your old entry I've deleted today again.

[Alex]

Originally Posted by kar_bon

...

Hello.
Status updated at 2022-11-30:

Sieved up to p = 1.7e14
Passed n = [1.000.001..2.000.000] (7563 tests).

No new primes found yet.