Landon Curt Noll (born October 28, 1960) is an American

computer scientist A computer scientist is a person who is trained in the academic study of computer science. Computer scientists typically work on the theoretical side of computation, as opposed to the hardware side on which computer engineers mainly focus (al ...

, co-discoverer of the 25th

Mersenne prime In mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form for some integer . They are named after Marin Mersenne, a French Minim friar, who studied them in the early 17t ...

and discoverer of the 26th, which he found while still enrolled at Hayward High School and concurrently at

California State University, Hayward California State University, East Bay (Cal State East Bay, CSU East Bay, or CSUEB) is a public university in Hayward, California. The university is part of the 23-campus California State University system and offers 136 undergraduate and 60 post ...

Biography

Noll was born in

Walnut Creek, California Walnut Creek is a city in Contra Costa County, California, United States, located in the East Bay region of the San Francisco Bay Area, about east of the city of Oakland. With a total population of 70,127 per the 2020 census, Walnut Creek ser ...

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. At age 18, he became the youngest person to break the record for the

largest known prime The largest known prime number () is , a number which has 24,862,048 digits when written in base 10. It was found via a computer volunteered by Patrick Laroche of the Great Internet Mersenne Prime Search (GIMPS) in 2018. A prime number is a posi ...

. He has held or co-held the record three times. He is also the co-inventor (with

John Horton Conway John Horton Conway (26 December 1937 – 11 April 2020) was an English mathematician active in the theory of finite groups, knot theory, number theory, combinatorial game theory and coding theory. He also made contributions to many branches ...

) of a system for naming arbitrarily large powers of 10. He also helped start the

International Obfuscated C Code Contest The International Obfuscated C Code Contest (abbreviated IOCCC) is a computer programming contest for the most creatively obfuscated C code. Held annually, it is described as "celebrating 'ssyntactical opaqueness". The winning code for the 27t ...

, and is a co-inventor of the Fowler Noll Vo hash function. He was also a member of the Amdahl Six team (John S. Brown, Bodo Parady, Curt Landon Noll, Gene W. Smith, Joel F. Smith, and Sergio E. Zarantonello) which discovered another record prime in 1989; this prime remains unusual as a record large prime as it was not a Mersenne prime. Noll is an amateur astronomer. His work includes measuring the

Solar parallax Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight and is measured by the angle or semi-angle of inclination between those two lines. Due to foreshortening, nearby objects ...

during the 2004

Transit of Venus frameless, upright=0.5 A transit of Venus across the Sun takes place when the planet Venus passes directly between the Sun and a superior planet, becoming visible against (and hence obscuring a small portion of) the solar disk. During a trans ...

as well as the search for Vulcanoid asteroids. He was also involved in politics as a

Sunnyvale, California Sunnyvale () is a city located in the Santa Clara Valley in northwest Santa Clara County in the U.S. state of California. Sunnyvale lies along the historic El Camino Real and Highway 101 and is bordered by portions of San Jose to the nort ...

city council member and vice-mayor.

Notes

External links

Landon Curt Noll's home page

Noll Primer Prover Bio

{{DEFAULTSORT:Noll, Landon Curt 1960 births Living people American astronomers 20th-century American mathematicians 21st-century American mathematicians Number theorists American cryptographers Modern cryptographers American computer scientists California State University, East Bay alumni Linfield University alumni California city council members Scientists from the San Francisco Bay Area People from Sunnyvale, California