23 may refer to: 23 (number), the natural number following 22 and preceding 24. one of the years 23 BC, AD 23, 1923, 2023.
A 23 sided shape is called an Icosakaitrigon. The most well-known Christian psalm is Psalm 23 which starts “The Lord is my Shepherd”; this is also known as Shepherd’s Psalm. The number 23 if the ninth prime number, after the number 19. It takes around 23 seconds for blood to circulate the body on average.
Further in the sequence of Mersenne numbers, the 23rd prime number ( 83) is an exponent to the 14th composite Mersenne number, which factorizes into two prime numbers, the largest of which is twenty-three digits long when written in base ten:
In telegraphers code 23 means "break the line". 18: The Birthday Paradox states that a group of 23 randomly-selected people is the smallest number where there will be a probability higher than 50 per cent that two people will share the same birthday. 19: The author William Burroughs was obsessed with 23.