Sujet: prime numbers liste de sujets
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30 articles trouvés pour ce sujet.

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	2^(2^1954) est-il premier?		2005-10-04
		Un eleve pose la question : 2(21945)+1 est-il premier? Claude Tardif lui répond.
	27000001		2017-10-09
		Tulashiram pose la question : If a× b =27000001, then what is the value of a & b ? Penny Nom lui répond.
	The units digit of a prime		2015-01-08
		Patricia pose la question : Every prime number greater than 10 has a digit in the ones place that is included in which set of numbers below 1 3 7 9 or 1 3 7 or 0 2 4 5 6 8 or 1 3 5 9 Walter Whiteley lui répond.
	One factor array		2011-09-16
		Hana pose la question : hi my brother a 5th grade have a question. this is what it say "i have only one factor array, and i am between two numbers 12 and 16. what number am i?" Penny Nom lui répond.
	What is the largest prime number?		2010-11-20
		vadali pose la question : what is the largest prime number? Penny Nom lui répond.
	The cardinality of the prime numbers		2009-11-07
		Justin pose la question : Hello there, I was just wondering since the number of primes is infinite, are they equal to infinity or Aleph-null? Justin Robert Dawson and Victoria West lui répond.
	Primes		2009-06-25
		Chinonyerem pose la question : If p = 2^k - 1 is prime, show that k is an odd integer, except when k = 2. [ Hint: 3/4^n - 1 for all n >= 1.] Robert Dawson and Penny Nom lui répond.
	A positive integer with 2007 digits		2008-02-06
		Tom pose la question : Prove that there's a unique positive integer of 2007 digits lenght, divisible by 2^2007, and made up solely by the digits 2 and 5. Penny Nom lui répond.
	I am a prime number		2007-10-31
		sherry pose la question : I am a prime number. I can not be shared fairly except by one group. My array can only be one row. array can only be one row. Can you please explain this out to me so I can help my child with it. Thanks Penny Nom lui répond.
	Prime numbers		2007-01-16
		A student pose la question : are the product of two prime numbers always prime? Penny Nom lui répond.
	The sum of prime numbers		2006-11-28
		Rambabu pose la question : I would like to know the sum of prime numbers below some X say 10000. Provide me with easy way to get this done Penny Nom lui répond.
	given that p is a prime and p|a^n, prove that p^n|a^n		2006-03-24
		Janna pose la question : given that p is a prime and p|an, prove that pn|an Stephen La Rocque lui répond.
	Write the array for 3		2006-01-29
		Jamie pose la question : My son is a 5th grader and came home with a math question that I can't answer. The question stated - "Write the array for 3" I don't understand how this can be done with just one number. Penny Nom lui répond.
	GCF, LCM, primes and the ladder method		2006-01-07
		Linda pose la question : How would I teach both finding the GCF and LCM with prime factors...I recall the ladder method vaguely.??? Penny Nom lui répond.
	A two digit prime		2005-09-12
		A student pose la question : The units digit of a two-digit prime number is not greater than the tens digit by 3.If the positions of the two digits are interchanged, then the new number formed is greater than the original number by more than 18. Find the value of the original prime number. Penny Nom lui répond.
	Primes		2005-06-04
		Fede pose la question : Prove that there is not a number prime p, for which the numbers p+5 and p+10 are prime too. Penny Nom lui répond.
	The numbers p and 8p^2 +1 are prime.		2005-05-30
		Antonio pose la question : The numbers p and 8p2 +1 are prime. Prove that the number 8p2+2p+1 is also a prime number. Claude Tardif and Penny Nom lui répond.
	Prime numbers		2005-04-11
		Jesule pose la question : Given that p, p+10 and p+14 are prime numbers, find p. Claude Tardif and Chris Fisher lui répond.
	Divisors of 2n+1 and 3n+9		2004-06-02
		Chris pose la question : Amy selected a positive integer N and wrote numbers 2xN+1 and 3xN+9 on a whiteboard. Boris looked at the two numbers on the whiteboard and wrote in his notebook a positive integer that divides each of them. Find all possible numbers that Boris could have written in his notebook. Chris Fisher and Penny Nom lui répond.
	Pairs of prime numbers		2003-10-13
		Nikolas pose la question : Use pairs of prime numbers to find all the numbers less than 50 that have only two prime factors. Make an organized list. Penny Nom lui répond.
	Primes		2003-09-23
		Julie pose la question : #1. Suppose you are given a number (n) and told that 1 and the number (n) divide into (n). Does that mean (n) is prime? #2. Suppose that p is a prime number greater than or equal to 3. Show that p+1 cannot be a prime number. Penny Nom lui répond.
	The Sieve of Eratosthenes		2003-09-18
		Lynn pose la question : My daughter has been asked to find all the prime numbers by using the Sieve of Eratosthenes. I have no understanding what this means. Penny Nom and Claude Tardif lui répond.
	Why is 5 divided by 1/7 greater than 5 divided by 2/3?		2002-11-19
		Elizabeth pose la question : Without performing the division, explain why 5 divided by 1/7 is a number greater than 5 divided by 2/3. Is the least common multiple of two prime numbers always their product? Why or why not? Diane Hanson and Penny Nom lui répond.
	Prime numbers		2002-11-08
		Lonna pose la question : Is 2 a prime number or not?? Why is 1 not considered a prime number? Penny Nom lui répond.
	Neither prime nor composite		2001-05-08
		Marc pose la question : what 2 numbers are neither prime nor combitative? Penny Nom lui répond.
	T-shirts		1999-04-04
		Valerie pose la question : At a discount T-shirt shop the manager marked a special batch of T-shirts that originally sold for $2.00. When all the shirts sold the shop had collected $603.77. How many shirts did they sell and what was the price per shirt? Jack LeSage and Penny Nom lui répond.
	Divisors of 6n		1998-01-26
		James pose la question : If n is a positive integer such that 2n has 28 positive divisors and 3n has 30 positive divisors, then how many positive divisors does 6n have? (a) 32 (b) 34 (c) 35 (d) 36 (e) 38 Penny Nom and Haragauri Gupta lui répond.
	Prime Numbers		1997-09-04
		Jack Bedard pose la question : Hi. I have a real stupid question What are prime numbers? My name is Jack Bedard and I am in grade 5. Penny Nom lui répond.
	How do you find out if a number is a composite or prime?		1996-09-16
		Trish Feenstra pose la question : Hi my name is Trish Feenstra. In grade 8. How do you find out if a number is a composite or prime if it is big like 37 529? Reply soon got a test on Friday the 13th Denis Hanson lui répond.
	Prime numbers		1996-02-22
		Charles Hewitt pose la question : I would apprecaite it if you could share with me any algorithm to determine whether a number is prime. Penny Nom lui répond.

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