Derrick Henry Lehmer, Date of Birth, Place of Birth, Date of Death

Derrick Henry Lehmer

American mathematician

Date of Birth: 23-Feb-1905

Place of Birth: Berkeley, California, United States

Date of Death: 22-May-1991

Profession: mathematician

Nationality: United States

Zodiac Sign: Pisces

Derrick Henry "Dick" Lehmer (February 23, 1905 – May 22, 1991) was an American mathematician who refined Édouard Lucas' work in the 1930s and devised the Lucas–Lehmer test for Mersenne primes.
Lehmer's peripatetic career as a number theorist, with him and his wife taking numerous types of work in the United States and abroad to support themselves during the Great Depression, fortuitously brought him into the center of research into early electronic computing.

George Bergman (1943–)

	Alternative names	George M. Bergman
	Description	American university teacher
	Date of birth	22 July 1943
	Location of birth	Brooklyn
	Authority control	: Q16198978 VIAF: 36173960 ISNI: 0000 0001 1054 507X LCCN: n96003979 MGP: 32848 GND: 172970725 WorldCat