In a memoir in mathematics, an award-winning young mathematician recounts her move from simple math puzzles to prime numbers, the Sieve of Eratosthenes, Fermat's Little Theorem, Googles, and finally to her own algorithm and extraordinary research and discoveries in Internet cryptography. In January 1999, Sarah Flannery, a sports-loving teenager from Blarney in County Cork, Ireland, was awarded Ireland's Young Scientist of the Year for her extraordinary...