You can find the actual paper with a quick Google search:

https://www.google.com/search?q=Grantham+Frobenius+pseudoprimes
The first link for me is a link to the PDF on the AMS website:

http://www.ams.org/mcom/2001-70-234/S0025-5718-00-01197-2/S0025-5718-00-01197-2.pdf
In that paper he defines many different types of probable prime tests, including

the Frobenius probable prime test. That can be found in Section 3, which starts

on page 6 of the pdf (page 878 of the paper). The actual definition for the

Frobenius probable prime test and for Frobenius pseudoprimes are down on page

881 of the paper.

-David C.

On 1/5/2014 10:56 AM, Kermit Rose wrote:

> Frobenius probable prime test

>

> The web page at

>

> http://en.wikipedia.org/wiki/Frobenius_pseudoprime

>

> says that

>

> In number theory, a Frobenius pseudoprime is a pseudoprime that passes a

> three-step probable prime test set out by Jon Grantham in 1996.

>

> What are the three steps in the Frobenius probable prime test?

>

> Kermit Rose