Department of

April 2014 May 2014 June 2014 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 2 3 4 5 1 2 3 1 2 3 4 5 6 7 6 7 8 9 10 11 12 4 5 6 7 8 9 10 8 9 10 11 12 13 14 13 14 15 16 17 18 19 11 12 13 14 15 16 17 15 16 17 18 19 20 21 20 21 22 23 24 25 26 18 19 20 21 22 23 24 22 23 24 25 26 27 28 27 28 29 30 25 26 27 28 29 30 31 29 30

Thursday, May 1, 2014

**Abstract:** In joint work with Gail Yamskulna, we obtained some characterizations of Mersenne prime and primes for which 2 is a primitive root. These characterizations are based on group algebras, circulant matrices, binomial coefficients and bipartite graphs.