New AP13 record
- Here is a new AP13 record at 78 digits:-
(1374042988+22886141*n)*173#+1 is prime for n=0..12
All confirmed prime with PFGW -tc
Numbers tested by NewPGen: 2*10^9
NewPGen reduced these (by sieving to 100G) to: 4.17*10^8
PRP's found by PFGW: 1.05*10^8
AP12's found: 21
AP13's found: 1
NewPGen: 0.3 GHz-days
PFGW: 2.8 GHz-days
Pascal program to find AP's: 60 GHz-days
Poisson was slightly unfavourable: about 15 AP12's should have been
enough to yield an AP13.
A new target for you to beat, Jens :-)
- Mike Oakes wrote:
> Here is a new AP13 record at 78 digits:-Congratulations!
> (1374042988+22886141*n)*173#+1 is prime for n=0..12
http://hjem.get2net.dk/jka/math/aprecords.htm is updated.
I don't expect to go for this record anytime soon.
Jens Kruse Andersen