Trivia for August 2019

By | August 1, 2019

A tree planted in memory of George Harrison, the lead guitarist of The Beatles, died after being infested by beetles.1

If the sum of the digits of a number is divisible by three, the number is divisible by three.2 Likewise, if the sum of the digits of a number is divisible by nine, the number is divisible by nine.3

The watermelon is the official vegetable of the State of Oklahoma.4

SpongeBob SquarePants’ has a total of 40 holes in his body and his square pants cover 11 of them.5

The number of prime numbers less than 1,000 is the same as the number of hours in a week: 168.

Contrary to popular trivia lists, our eyes are not the same size from birth and our nose and ears do stop growing.6 7

In 1914, by Derrick N. Lehmer published a list of the first 665,000 prime numbers (“List of prime numbers from 1 to 10,006,721”, Carnegie Institution of Washington). He included 1 as a prime number, although in 2019, it is no longer considered prime. Today, that list can be created in 1.981 seconds on an interactive web page.

\\ PARI/GP
default(timer, 1)
count = 0;
forprime (x = 0, 10006721, print1(x, “, “); count++;);
print(“\n\nCount = “, count);

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, . . ., 10006663, 10006699, 10006721,

Count = 664999
time = 1,981 ms.

Footnotes

  1. Beatle George Harrison memorial tree killed by beetles“. BBC News. July 22, 2014.
  2. Coker, Chuck. “If the Sum of the Digits of a Number is Divisible by Three, the Number Is Divisible by Three“. IX23.com. August 22, 2019.
  3. Coker, Chuck. “If the Sum of the Digits of a Number is Divisible by Three, the Number Is Divisible by Three“. IX23.com. August 22, 2019.
  4. 25 OK Stat § 25-98.15 (2017)
  5. In the SpongeBob SquarePants episode “All that Glitters” (Season 4, Episode 19), SpongeBob can be seen without his square pants. He has 12 holes on his front, 9 holes on his back, 5 holes on the top, 4 holes on the bottom, 5 holes on his right side, and 5 holes on his left side. That is a total of 40 holes. When he is wearing his square pants, only 29 holes are visible. Therefore, his square pants cover 11 holes.
  6. Elert, Glenn, ed. “Diameter Of A Human Eye“. The Physics Factbook. 2002.
  7. Hinck, Michael. “Truth or Myth: Our Nose and our Ears Never Stop Growing“. Flushing Hospital Medical Center. June 24, 2016.

Leave a Reply