31

This number is a prime.

Just showing those entries submitted by 'Nie': (Click here to show all)

© Baskin-Robbins

Paul Dirac predicted antimatter and won a Nobel Prize in 1933 (a prime). Carl Anderson detected antimatter and won a Nobel Prize three years later. Both men were age 31 when they won the Nobel Prize, and they tie for being the youngest Nobel laureates. [McCranie]

The first U.S. space satellite (Explorer-I) weighed just less than 31 pounds and was launched on Jan 31, 1958. The high-power transmitter worked for 31 days. [McCranie]

In the movie 2010, the code to destruct HAL is to enter 999, square root, and press integer on a calculator. That gives 31. [McCranie]

One billion seconds is approximately equal to 31.7 years (rounded to one decimal place). Note that 31 and 7 are both Mersenne primes. [Nie]