 Derrick Norman Lehmer

Derrick Norman Lehmer (1905-1997) was an American mathematician and a prominent figure in number theory and computational mathematics. He is best known for his work in the field of prime numbers and for developing algorithms and techniques for integer factorization. Lehmer contributed significantly to the use of computers in mathematics, particularly in the verification of large prime numbers. One of his notable contributions is the Lehmer sieve, a generalization of the classical sieve methods used to find prime numbers.