The Ramanujan memorial lecture- "Fascinating World of Prime" was held on 22nd December, 2020 through Zoom platform. All our Under Graduate and Post Graduate students and all the faculty members of the Department have participated in this counselling lecture. Dr. P. Mariappan, Head of the Department of Mathematics, Bishop Heber College (Autonomous), Trichy presided over the function. Dr. Shine C Mathews, Assistant Professor, St. Berchman College, Changanachery, Kottayam, Kerala delivered the counselling and motivated the students. He highlighted the importance of prime numbers. Also, he explained various theorems based on prime numbers and some importance of topology. He encouraged our students to study Prime numbers in a meaningful way.