Sophie Germain was a French mathematician born on April 1, 1776. She is best known for her work in number theory and elasticity. Despite facing significant barriers as a woman in a male-dominated field, she made substantial contributions, including her research on the Fermat's Last Theorem and the development of Germain primes. Germain's determination led her to study mathematics in secret, using the name of a male colleague to gain access to academic resources. Her work laid the groundwork for future mathematicians and engineers, and she is remembered as a pioneer for women in science and mathematics.