Got this email from Primegrid about a private message. The prime is too small for the top 5000 but I guess it is a prime.

You have received a new private message at PrimeGrid.

From: Do Not Reply (ID 485358)

Subject: You have found an AP20!

*(This is an automated message. Replies to this message will not be read.)*Dear AP finder,

Congratulations! Our records indicate that a computer registered by you has found a unique Arithmetic Progression of primes of length 20. This computer is assigned to the

**AP27** project. Since primes found in this subproject are not large enough to report to the Top 5000 Primes List, your AP20 sequence is visible immediately.

Workunit

586522382 :

**28687378146352223+75382964*23#*n for n=0..19**You can select the minimum length of AP for which to receive these notifications in your

PrimeGrid preferences.

If you have any questions or concerns, please contact us and we will surely resolve any problems.

Once again, congratulations on your find! Thank you for participating in PrimeGrid.

Sincerely,

The PrimeGrid Staff

EDIT: I got another one today

Dear AP finder,

Congratulations! Our records indicate that a computer registered by you has found a unique Arithmetic Progression of primes of length 20. This computer is assigned to the

**AP27** project. Since primes found in this subproject are not large enough to report to the Top 5000 Primes List, your AP20 sequence is visible immediately.

Workunit

586522382 :

**128848194080390107+75383050*23#*n for n=0..19**You can select the minimum length of AP for which to receive these notifications in your

PrimeGrid preferences.

If you have any questions or concerns, please contact us and we will surely resolve any problems.

Once again, congratulations on your find! Thank you for participating in PrimeGrid.

Sincerely,

The PrimeGrid Staff