PPT-Prime Numbers Eratosthenes’ Sieve

Terra AltaEast Preston School Eratosthenes ehruhTAHSthuhneez Eratosthenes was the librarian at Alexandria Egypt in 200 BC Note every book was a scroll Eratosthenes ehruhTAHSthuhneez. Prime numbers and factors.. Prime numbers. Prime numbers divide by themselves and one.. So… 3=3*1…or… 13=13*1. But 16 divides 16*1 and 8*2 and 4*4. So you see that prime numbers are very specific.. History, theories and applications. By Kim . Wojtowicz. Definition of a Prime Number. A Prime number is a number that has exactly 2 Distinct factors: itself and 1. . Smallest prime number is 2, it is also the only even prime number.. The Sieve of Eratosthenes is an ancient method for finding all primes numbers up to a specified number.It was created by Eratosthenes (275-194 B.C., Greece), an ancient Greek mathematician. Just as a Remember to Silence Your Cell . Phone and Put It In Your Bag!. Definition of Prime and Composite Numbers. A natural number that has exactly two distinct (positive) factors is called a . prime. . number. by Carol Edelstein. Definition. Product. – An answer to a multiplication problem.. . 7 x 8 = 56. Product. Definition. Factor. – a number that is multiplied by another to give a product.. . 7 x 8 = 56. sit down. get . out homework. &quietly work on . bellringer. Solve. -4^2 (-2)^3 (-3)^4. Solve. -4^2 (-2)^3 (-3)^4. -16. -8. 81. Get papers . sit down. get . out homework. &quietly work on . Use the beans to find factors of 24. Count out 24 beans. We know that products can be illustrated using a rectangular model. Make a rectangle using the beans. What are the numbers you multiply to get 24?. Daniel . FreemaN. , SLU. Old school codes. Full knowledge of the code is needed to both encrypt messages. and to decrypt messages.. The code can only be used between a small number of trusted people.. by Carol Edelstein. Definition. Product. – An answer to a multiplication problem.. . 7 x 8 = 56. Product. Definition. Factor. – a number that is multiplied by another to give a product.. . 7 x 8 = 56. When Will I Ever Use Prime and Composite Numbers?. If you are baking cupcakes for a birthday party, you will be able to know if the amount you baked can be divided evenly between your friends. . Will you have leftovers? If it is a prime number, you know there will be leftovers!. Seth Futrell, Matthew Ritchie, . Dakota Perryman, Mark Thompson . (Tag’s Tots). Background History . Prime numbers have fascinated the human race for millennia with solutions to finding primes predating the times of euclid. Primes continue to amaze mathematicians and theoretical thinkers daily. Research of these fascinating numbers continues in present day with the continuing growth of the field of number theory and encryption protocols .. Cumulative Frequency. Note to anybody seeing this. These slides are slightly different from what was used in the recitation to reflect the most accurate information. Answers to students’ questions. Fola Olagbemi. Outline. What is the sieve of Eratosthenes?. Algorithm used. Parallelizing the algorithm . Data decomposition options for the parallel algorithm . Block decomposition (to minimize inter-process communication). What is a composite number?. Give an example of each.. Greatest Common Factor. Mr. . Haupt. CC.2.1.8.E.1. Greatest Common Factor. The Greatest Common Factor, or GCF, is the largest number that goes in to every number given..