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Science News
June 5, 2004
Ivars Peterson |
Priming Upward The Great Internet Mersenne Prime Search (GIMPS) continues to unearth new Mersenne primes.   |
Science News
December 6, 2003
Ivars Peterson |
Megaprime Champion The catalog of humongous prime numbers has a new entry -- the champion prime (2^20996011 - 1), which has 6,320,430 decimal digits. It's the largest known prime number and the 40th Mersenne prime ever found. |
Science News
January 14, 2006
Ivars Peterson |
Team Mersenne A Central Missouri State University computer identified the 43rd Mersenne prime, setting the record for the largest known prime number. This behemoth, 2 30402457 - 1, runs to a whopping 9,152,052 decimal digits. |
Science News
March 5, 2005
Ivars Peterson |
Primal Surge Last month saw the discovery of the 42nd known Mersenne prime, the largest prime yet identified... Puzzle of the Week... |
Science News
April 24, 2004
Ivars Peterson |
Progressive Primes In one step toward elucidating certain primal mysteries, two mathematicians have now apparently proved that the population of primes contains an infinite collection of arithmetic progressions. |
Science News
July 16, 2005
Ivars Peterson |
Closing the Gap on Twin Primes Euclid proved that the set of primes is infinite in size more than 2000 years ago, but no one has yet proved whether there is an infinite number of twin primes, or pairs of primes that have a difference of two. There's now hope that that matter will finally be resolved. |
Science News
October 11, 2003
Ivars Peterson |
Goldbach Computations Goldbach's conjecture that every even number larger than 2 is the sum of two prime numbers remains unproven, but recent research may provide some insight. |
Science News
August 27, 2005
Ivars Peterson |
Primes, Palindromes, and Pyramids Many questions about palidromic prime pyramids remain open. Is there a better way than exhaustive search for finding the tallest pyramids with fixed step sizes? Can you prove that fixed step size pyramids are finite? |
Science News
January 18, 2003
Ivars Peterson |
A Perfect Collaboration Together, Euclid of Alexandria (c325-c265 BC) and Leonard Euler (1707-1783), born in Switzerland and at various times resident in St. Petersburg and Berlin, collaborated on proving an interesting result in number theory -- without the benefit of e-mail or time travel. |
Science News
March 20, 2004
Ivars Peterson |
Deriving the Structure of Numbers The study of prime numbers has long been a central part of number theory, a field traditionally pursued for its own sake and for the mathematical beauty of its results. |
InternetNews
December 28, 2005
Sharon Gaudin |
Grid Discovers Largest Known Prime Number Using an international grid of about 70,000 computers, researchers this month discovered the largest known prime number. |
Science News
May 4, 2002
Ivars Peterson |
Prime Spirals There is truly not only mystery but also beauty in the distribution of prime numbers... |
Science News
July 29, 2006
Ivars Peterson |
Names for Numbers Recreational mathematics offers a vast playing field for amateur and professional mathematicians alike. Named numbers, such as Smiths, have all sorts of intriguing properties. |
Science News
June 2, 2001
Ivars Peterson |
Prime Twins Although most mathematicians believe that there are infinitely many twin primes, no one has yet proved this conjecture to be true. Indeed, the twin prime conjecture is considered one of the major unsolved problems in number theory... |
Science News
August 19, 2000
Ivars Peterson |
Goldbach's Prime Pairs Evenly divisible only by themselves and one, primes are a rich source of speculative ideas that mathematicians often find simple to state but difficult to prove. The Goldbach conjecture is a prime example of such a conundrum. |
Entrepreneur
February 2007
Rosalind Resnick |
On Loan Borrowing against your 401(k) to start a business. |
Science News
August 28, 2004
Ivars Peterson |
More Progressive Primes In July, Markus Frind, Paul Jobling, and Paul Underwood announced that they had discovered the first sequence consisting of 23 prime numbers in arithmetic progression. This surpasses the previous record of 22 primes in arithmetic progression, set in 1993. |
AskMen.com
Terry Baldwin |
Top 10: Views Our top finishers include a well-rounded bunch of timeless sites and some lesser-known spots -- all worth a look. |
Science News
February 24, 2001
Ivars Peterson |
Appealing Numbers It's amazing how much effort has gone into tracking down amicable numbers, which have practically no application in mathematics. They have a curious appeal that has endured for millennia... |
Science News
November 15, 2003
Ivars Peterson |
Cool Rationals One of my more distinct recollections of math class involves the decimal representation of rational numbers and the discovery of wonderful patterns among those digits. A new paper finds fascinating new patterns and provides some numerological explanations. |
Chemistry World
October 19, 2015
Philippa Matthews |
BMS agrees $1.7bn immuno-oncology collaboration Bristol-Myers Squibb has entered into a worldwide license and collaboration with Five Prime Therapeutics to develop and commercialize Five Prime's colony stimulating factor 1 receptor (CSF1R) antibodies. |
Fast Company
Neal Ungerleider |
Amazon's Prime Day Sales Broke Black Friday Records Yesterday's much-vaunted Prime Day -- which coupled a P.T. Barnum-style marketing blitz with a discount arms race -- apparently went very, very well for Amazon. |
Science News
August 17, 2002
Ivars Peterson |
Testing for Divisibility Few people, including many mathematicians, know all the simple rules by which large numbers can be tested quickly for divisibility by numbers 1 through 12. Nonetheless, they can be handy for solving digital puzzles, reducing fractions, and as targets for algorithm development. |
Science News
January 4, 2003
Ivars Peterson |
Sound-Byte Math Music Swedish composer Daniel Cummerow has created mathematical sound bytes belonging to a category known as algorithmic music. Each musical fragment is determined by a mathematical recipe -- a formula that links digits with musical notes and their duration... |
Investment Advisor
July 2005 |
Assessing the Roth 401(k) It may not be around forever, but there are real benefits for the next decade. |
Financial Advisor
May 2010
Mary Rowland |
Better Laid Plans Several advisors have tried to take advantage of the changes in 401(k) advice-giving to carve a new niche. |
National Defense
August 2007
Grace Jean |
Overlooked Business Model Could Benefit Small Firms Suppose a small business has produced a technology that will help troops fighting in Iraq, contract lawyers say it's better to sell off the business unit that developed the product. |
Wall Street & Technology
February 14, 2006
Paul Allen |
Prime Time for Primes Once an esoteric business controlled by three players, the prime brokerage business has become a hotbed of competition as rival banks and brokers have sought to profit from the hedge fund explosion. |
Financial Planning
May 1, 2007
Weller & enkins |
The 401(k) Fee Effect The costs of 401(k) accounts are eating into Americans' retirement returns. What should be done? |
Real Estate Portfolio
May/Jun 2001
Jack McAllister |
On the Rise If 401(k) plan values are to rise to their potential, they could use a little more yeast -- in the form of REIT stocks... |
Fast Company
November 2002
Charles Fishman |
Your 401(k) Is Making a Statement What's the most powerful symbol of a troubling year in finance? There are many candidates, from disgraced Wall Street analysts to CEOs in handcuffs. But few symbols rival the unopened 401(k) statement -- a quarterly window into the personal wealth of millions of Americans. |
CFO
April 1, 2003
Dave Cook |
Take Your Pick As Congress weighs reforms, employees may get help with choosing specific 401(k) investments. |
HBS Working Knowledge
July 15, 2015
Christian Camerota |
Amazon Prime Day: The Logic Behind a Retailer's Made-up Holiday The company is celebrating its 20th birthday with a sale -- a shopping event for its 40 million Prime customers. |
