23 (number)

23 (twenty-three) is the natural number following 22 and preceding 24.

In mathematics

Twenty-three is the ninth prime number, the smallest odd prime that is not a twin prime. Twenty-three is also the fifth factorial prime, the second Woodall prime. It is an Eisenstein prime with no imaginary part and real part of the form 3n − 1.

Twenty-three is the sum of three other, consecutive, prime numbers; 5, 7 and 11. It is the first prime number showing this characteristic.

The fifth Sophie Germain prime and the fourth safe prime, 23 is the next to last member of the first Cunningham chain of the first kind to have five terms (2, 5, 11, 23, 47). Since 14! + 1 is a multiple of 23 but 23 is not one more than a multiple 14, 23 is a Pillai prime. 23 is the smallest odd prime to be a highly cototient number, as the solution to x − φ(x) for the integers 95, 119, 143, 529.

Twenty-three is the aliquot sum of two integers; the discrete semiprimes 57 and 85 and is the base of the 23-aliquot tree.

23 is the first prime p for which unique factorization of cyclotomic integers based on the pth root of unity breaks down.

February 23

February 23 is the 54th day of the year in the Gregorian calendar. There are 311 days remaining until the end of the year (312 in leap years).

Events

2017

2017 (MMXVII) will be a common year starting on Sunday (dominical letter A) of the Gregorian calendar, the 2017th year of the Common Era (CE) and Anno Domini (AD) designations, the 17th year of the 3rd millennium, the 17th year of the 21st century, and the 8th year of the 2010s decade.

Predicted and scheduled events

January

August

September

Telugu cinema

Telugu cinema, also known by its sobriquet Tollywood, is a part of Indian cinema producing films in the Telugu language, centered around the Indian states of Andhra Pradesh and Telangana, based in the Hyderabad neighbourhood of Film Nagar. Since 1909, filmmaker Raghupathi Venkaiah Naidu was involved in many aspects of Indian cinema's history, like producing short films and travelling to different regions in Asia to promote film work. In 1921, he produced the first Telugu silent film, Bhishma Pratigna. He is cited as the father of Telugu cinema.

In 1933, East India Film Company produced its first Indian film, Savitri, in Telugu. Shot in Calcutta on a budget of ₹ 75 thousand, and based on a popular stage play by Mylavaram Bala Bharathi Samajam, the film was directed by father of the "Telugu Theater Movement" Chittajallu Pullaiah and cast stage actors Vemuri Gaggaiah and Dasari Ramathilakam as "Yama" and "Savithri" respectively. The blockbuster film has received an honorary diploma at Venice Film Festival. Multilingual actor Vuppaladadiyam Nagayya was known as the Paul Muni of India, and one of the influential actors of Telugu cinema.

Bajirao I

Bajirao I (18 August 1700 – 28 April 1740) was a general of the Maratha Empire in India. He served as Peshwa (Prime Minister) to the fourth Maratha Chhatrapati (king) Shahu from 1720 until Bajirao's death. He is also known by the names Bajirao Ballal and Thorale (Marathi for Elder) Bajirao.

Bajirao is credited with expanding the Maratha Empire, especially in the north, which contributed to its reaching a zenith during his son's reign twenty years after his death. Bajirao is generally regarded as the most influential of the nine Peshwas from the Bhat family.

Early life

Bajirao was born into the Bhat family of Marathi Chitpavan Brahmin lineage. His father Balaji Vishwanath was the first Peshwa of Chhatrapati Shahu; his mother was Radhabai. Bajirao had a younger brother Chimaji Appa.

Bajirao would often accompany his father on military campaigns. He was with his father when the latter was imprisoned by Damaji Thorat before being released for a ransom. When Vishwanath died in 1720, Shahu appointed the 20-year old Bajirao as the Peshwa. He is said to have preached the ideal of Hindu Pad Padshahi (Hindu Empire), but there are doubts over his or his successors' sincerity on this matter.