### Another world record near-repdigit palindrome prime

After I found the previous one on Halloween, another one turns up the day before Thanksgiving. This one is all nines, except for the center digit which is eight.

Primality testing 10^(2*67404+1)-1*10^67404-1 [N+1, Brillhart-Lehmer-Selfridge]

Running N+1 test using discriminant 7, base 1+sqrt(7)

Calling Brillhart-Lehmer-Selfridge with factored part 34.95%

10^(2*67404+1)-1*10^67404-1 is prime! (4490.0911s+0.0381s)

(It's better written out as 10^134809-10^67404-1 ).

Primality testing 10^(2*67404+1)-1*10^67404-1 [N+1, Brillhart-Lehmer-Selfridge]

Running N+1 test using discriminant 7, base 1+sqrt(7)

Calling Brillhart-Lehmer-Selfridge with factored part 34.95%

10^(2*67404+1)-1*10^67404-1 is prime! (4490.0911s+0.0381s)

(It's better written out as 10^134809-10^67404-1 ).

## 0 Comments:

Post a Comment

<< Home