Is 91 a prime or composite? If composite, what are its factors?
114553
Composite \n\n91= 1 x 91 and 91 = 13 x 7\n\nFactors = 1 , 7 , 13 , 91
97999
In mathematics, a prime number (or a prime) is a natural number greater than one whose only positive divisors are one and itself. Said another way, a prime number can only be divided into equally by 1 and itself (3 is a prime number because 1 goes into it equally 3 times and 3 goes into it equally once, there is no remainder.) A natural number that is greater than one and is not a prime is called a composite number. The numbers zero and one are neither prime nor composite. The property of being a prime is called primality. Since 2 is the only even prime number, the term odd prime refers to all prime numbers greater than 2. Prime numbers are of course of prime importance in number theory.\n\nThe sequence of prime numbers begins as follows:\n\n2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, ... \n\n2 is the only even prime number
216982
2, 3, 5, 7, 11, 13, 17, 19\n1 is NOT prime
858830
2, 2, 2, 3, 3. The prime factors of a number are the set of prime numbers which, when all multiplied together, make that number.\n\nYou can use this program to find prime factors:\nhttp://www.brennen.net/primes/FactorApplet.html
240962
i think this will work...\n\nint prime=43;\nint isprime=0;\nfor(int i=2 ;i<prime;i++)\n{\n   if((prime%i)==0))\n   {\n       isprime=1;\n       break;\n   }\n}\nif(isprime==1)\n   printf("Not prime");\nelse\n   printf("Prime !");\n\n\n=====\nGot it na??
724852
Break it down to smaller numbers: 90 = 9 * 10, so prime-factor 9 and 10.\n\n90 = 9 * 10 = 3 * 3 * 2 * 5 = 2 * 3^2 * 5\n\nSo the prime factors of 90 are 2, 3 (twice, or squared), and 5.
331342
The factors of 186 can be found as follows:\n\n186 is even, so 2 is a factor\n186/2 = 93\n\nBoth 9 and 3 are divisable by 3, so 3 is a factor\n93/3=31\n\n31 is prime, so it's the final factor.\n\nI'm not sure how you'll get anything to add up to 46 though, maybe 36?
728995
7 is a prime number.  It is divisible only by itself and 1.
886656
It can be as long as you want.\nChoose whatever positive integer n you want. Consider these numbers: n! + 2, n! + 3, .. , n! + n. They are n consecutive numbers. The first one is divisible by 2 (since n! = n*..*2*1, and 2 is), the second one is divisible by 3, .., the last is divisible by n. So none of those are prime.\nSo, whatever n you chose, you have n-1 consecutive non-primes. If I choose n = 1000001, theres a gap of at least 1000000 numbers between any primes there.
1050937
go with #2 ... 253 is not prime (253 / 11 = 23)
120534
No, prime numbers are numbers that cannot be divided by anything but itself and 1. 6, 12, 24, and 36 can all be divided by 2
482620
All primes (ignoring 2) are odd.\n\nDivide odd numbers into 3 groups: those of the form 6n - 1, those of the form 6n + 1, and those of the form 6n + 3.\n\nIgnoring 3 itself, all primes are of the form 6n + 1 or 6n - 1, as all numbers of the form 6n + 3 or 6n - 3 are divisible by 3 and not prime. \n\nYour proposition follows from that fact.
1030050
5/6 = 5/2*3\n10/25 = 2*5/5*5\n18/36 = 2*3*3/2*2*3*3\n15/50 = 3*5/2*5*5\n\n18/2 = 9/3 = 3 so the prime factorization is 2*3*3\n105/3 = 35/5 = 7 so the prime factorization is 3*5*7\n711/3 = 237/3 = 79 so the prime factorization is 3*3*79
936530
Try to factorise number 319.\nIt is 11 * 29\nSo you have 11 rows 29 people per row \nor 29 rows with 11 people per row.\n\nIf you wonder how to find it it is simple\nTry to divide 319 with prime numbers\n\n2,3,5,7,11,13,17\n\nOnly 11 is ok!
1090956
25, if you're talking about whole, positive numbers.\n\nThey are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97.\n\nMany people debate whether or not 0 and 1 should also be considered prime.  0 is just weird and 1 is part of the definition of prime, so I don't think they really are prime, personally.
161312
"Mathematicians have tried in vain to this day to discover some order in the sequence of prime numbers, and we have reason to believe that it is a mystery into which the human mind will never penetrate." — Leonhard Euler\n\nWe don't know if there is a pattern, but if it is, it's pretty complicated. The formula x^2 + x + 41 gives primes up to 40, but that's as far as it'll go.\n\nThere is a possible pattern with the distribution of primes, but this has not been proven, and if you manage to prove the Reimann hypothesis, you'll be plenty rich!
341155
79 is a prime number.  Its only factors (in the real number system) are 1 and 79.