1700-1720 complete, no primes.

k=5 is now tested to 2160k with the following gaps:
1650-1700, in progress by Curtis
1920-1968, team effort, files available from post #1

1920-1924 complete, no primes.

Taking 1924-1930.

2,160,000-2,366,468 complete, no primes

2,461,800-2,600,000 complete, no primes

Peter

Congrats on many completed tests! It can easily happen that k=5 has no more primes upto n=3.6M except those you already found...

BTW, I completed 1924-1930, found no primes, and I'm now working on 1930-1934.

I still have about a 12k gap in the 1600s I'm filling. I should move on to the 1900's files posted here within a few weeks.

Peter, a new file from 2600 to 2800 will be sent later this week.
-Curtis

Taking 1930-1932

I already reserved 1930-1934 but failed to remove links to test files.

Adam will test 1930-1932, and I'm taking 1932-1936.

1930-1932 complete. no primes.

1932-1936 complete, no primes.

Taking 1936-1938.

1936-1938 complete, no primes.

Taking 1938-1940.