Twenty Three (23)
1. It is a prime number and more interestingly it’s both digits are also prime so is its sum. 2 and 3 are prime and 2+ 3 = 5 is also a prime.
1. It is a prime number and more interestingly it’s both digits are also prime so is its sum. 2 and 3 are prime and 2+ 3 = 5 is also a prime.
It is a Cousin prime with 19 (differ by 4) and a sexy prime with 17 (differ by 6).
2. Biorhythm theory proposed by Wilhelm Fleiss states that men’s physical and emotional characteristics follow a 23 day cycle.
3. It is the smallest prime number with two consecutive digits.
4. In a group of 23 people, the probability of at least 2 persons having same birthday is more than 50%.
5. It is the smallest odd prime which is not a twin prime.
6. 1 repeated 23 times gives a prime number.
11, 111, 111, 111, 111, 111, 111, 111 is a prime number.
7. 23 balls can be arranged in two different ways.
8. The factorial of 23 has exactly 23 digits.
23! = 25,852,016,738,884,976,640,000
9. It is the sum of three consecutive primes 5, 7 and 11. It is the first prime number with this characteristic. 23 = 5 + 7 + 11
10. The sum of first 23 prime numbers is divisible by 23. The sum of first twenty three primes is 874
11. David Hilbert had presented 23 problems to the International Congress of Mathematicians in 1900. These problems were unsolved by that time and it was first published by Mary Frances Winston Newson in the Bulletin of the American Mathematical Society in 1902.
12. It is the atomic number of Vanadium.
13. It is the fifth Sophie Germain prime. A prime number p is a Sophie Germain prime if 2p + 1 is also prime.
This is named after French mathematician Marie Spphie Germain. The first few Sophie Germain Primes are
–2, 3, 5, 11, 23, 29, 41, 53, 83, --
23 is a prime and 2 x 23 + 1 = 47 is also a prime.
14. It can be partioned into 1575 ways.
15. The 23rd number of English Alphabet is W and in a normal computer board W lies between 2 and 3.
16. In English alphabet 23rd letter W has two downwards and 3 upward move.
17. Trivia :-
Dr. Rajesh Kumar Thakur
2. Biorhythm theory proposed by Wilhelm Fleiss states that men’s physical and emotional characteristics follow a 23 day cycle.
3. It is the smallest prime number with two consecutive digits.
4. In a group of 23 people, the probability of at least 2 persons having same birthday is more than 50%.
5. It is the smallest odd prime which is not a twin prime.
6. 1 repeated 23 times gives a prime number.
11, 111, 111, 111, 111, 111, 111, 111 is a prime number.
7. 23 balls can be arranged in two different ways.
8. The factorial of 23 has exactly 23 digits.
23! = 25,852,016,738,884,976,640,000
9. It is the sum of three consecutive primes 5, 7 and 11. It is the first prime number with this characteristic. 23 = 5 + 7 + 11
10. The sum of first 23 prime numbers is divisible by 23. The sum of first twenty three primes is 874
11. David Hilbert had presented 23 problems to the International Congress of Mathematicians in 1900. These problems were unsolved by that time and it was first published by Mary Frances Winston Newson in the Bulletin of the American Mathematical Society in 1902.
12. It is the atomic number of Vanadium.
13. It is the fifth Sophie Germain prime. A prime number p is a Sophie Germain prime if 2p + 1 is also prime.
This is named after French mathematician Marie Spphie Germain. The first few Sophie Germain Primes are
–2, 3, 5, 11, 23, 29, 41, 53, 83, --
23 is a prime and 2 x 23 + 1 = 47 is also a prime.
14. It can be partioned into 1575 ways.
15. The 23rd number of English Alphabet is W and in a normal computer board W lies between 2 and 3.
•Aryabhata wrote his first book
ARYABHATIYA at the age of 23.
•Johann Bernoulli wrote the manuscript of De Calculo differentatium at the age of 23.
•Ramanujan got his first article published
in the journal of Indian mathematical society at the age of 23 and the problem
was a nested radical roots
18. It is a Happy Number. A number is called Happy Number if sum of squares of its digit after repeated operation comes out to 1.
Be happy, 23 is a Happy Number
19, 23! (Factorial of 23) has only 23 digits
and it is the only number following this properties. The factorial expansion
has all digits from 0 to 9.
23!=25,852,016,738,884,976,640,000
20. Enjoy this beautiful expression
2 ! + 3 ! = 2^3
1! + 2 x 2! +3 x 3! = 23
You can watch the movie Number 23 on the given link
Happy reading
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Dr. Rajesh Kumar Thakur
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