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15 is a composite, deficient, lucky, and pentatope number, among other classifications. It has various roles in geometry, number theory, physics, and religion, such as being the smallest number with two different factorizations as the difference of two squares.
Learn the origin, usage, and examples of the word fifteen, a number that is one more than fourteen. Find out how to say fifteen in different languages and play word games related to fifteen.
Learn about the number 15, its properties, and how to write it in different systems. Find out its cardinal, ordinal, and Greek forms, and its divisors and factors.
Learn how to find the factors, pair factors, prime factors and prime factorisation of 15 with examples and video lesson. Also, explore the common factors, GCD and multiples of 15 with related articles and practise questions.
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- What are the multiples of 15?The list of multiples of 15 is given below: 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, and so on.
- What are the factors of 15 and 24?The factors of 15 are: 1, 3, 5, 15 The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24
- What are the prime factors of 15?The prime factors of 15 are 3 and 5.
- What is the sum of factors of 15?The sum of factors of 15 is: 1+3+5+15 = 24.
- What factors are common to 15 and 30?The common factors of 15 and 30 are 1, 3, 5, and 15 since the factors of 15 are 1, 3, 5, 15, whereas the factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30.
- What are the common factors of 15 and 5?The common factors of 15 and 5 are 1 and 5 since the factors of 15 are 1, 3, 5, 15, whereas the factors of 5 are 1, 5.
- What are the common factors of 15 and 25?The common factors of 15 and 25 are 1 and 5 since the factors of 15 are 1, 3, 5, 15, whereas the factors of 25 are 1, 5, 25.
Chicago style: Numbermatics. 2024. "Number 15 - Facts about the integer". https://numbermatics.com/n/15/. Your guide to the number 15, an odd composite number composed of two distinct primes. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun.
Jan 27, 2023 · Learn about the history, culture, and science of the number 15, from Shakespeare to Warhol, from phosphorous to quinceañera. Discover how 15 is connected to weddings, emergencies, flags, games, presidents, and more.
