perl mason

Package the_fourth_session_a; /* Title: Mason Prime If the sum of all the true factors of a number equals itself, it is called "complete number" or "perfect number". For example: 6 = 1 + 2 + 3 28 = 1 + 2 + 4 + 7 + 14 As early as more than 300 BC, Euclid gave a theorem to determine the complete number: If the 2^n-1 is prime, then 2^ (n-1) * (2^n-1) is the complete number. where ^ denotes "exponentiation" operation, the precedence of the powers is hig

The problem is described as 2P-1 of the prime number is called Mason, when p must also be a prime. But not necessarily, that is, if p is a prime number, 2P-1 is not necessarily a prime number. By the end of 1998, 37 Mason had been found. The biggest one is p=3021377, which has 909,526 bits. Mason number has many important applications, which are closely related t

A mason prime number is a positive integer, such as a 2^p-1, in which the exponent P is a prime and is often recorded as an MP. If the MP is a prime number, it is called a mason prime. p=2,3,5,7, MP is prime, but m11=2047=23x89 is not prime The mason number may be prime or composite, so how to judge the Mason number is

Topic Links:http://acm.nefu.edu.cn/JudgeOnline/problemshow.php?problem_id=120Main topic:Give a number p, if MP = 2^p-1 is a mason prime, then output "yes", otherwise output "no".Ideas:This problem p is less than 62. MP is less than 2^62-1. If the direct number of primes will be relatively slow, using the Sieve method of the amount of dataIt's going to be big. So here is the rule of lucas-lehmer judgment.Lucas-lehmer decision rule Specific steps:If you

Topic Link: UVa 1323-vivian ' s Problem Given the number of N, and then add a power ei for each number, the last N-term base multiplication of the result is m, if the sum of all the factors of M can be written as 2x, to find the maximum value of x, if there is no condition to meet, output no How to solve a problem: If a number can be written as a product of several different Mason primes, then the number of factors and can be written as 2x.The range o

P1223Mason Number accepted Tags: NOIP universal group 2003[Display label]DescribeThe prime number of a shape such as 2^p-1 is called Mason, at which point P must also be a prime. But the reverse is not necessarily, that is, if P is a prime number, 2^p-1 is not necessarily prime. By the end of 1998, 37 Mason had been found. The biggest one is p=3021377, which has 909,526 bits.

Title DescriptionDescriptionThe prime number of a shape such as 2p-1 is called Mason, at which point P must also be a prime. But not necessarily, that is, if p is a prime number, 2p-1 is not necessarily a prime number. By the end of 1998, 37 Mason had been found. The biggest one is p=3021377, which has 909,526 bits. Mason number has many important applications, w

Question Description The prime number of a shape such as 2p-1 is called Mason, at which point P must also be a prime. But not necessarily, that is, if p is a prime number,2p-1 is not necessarily a prime number. By the end of 1998, 37 Mason had been found . The biggest one is p=3021377, which has 909,526 bits. Mason number has many important applicat

A Mason PrimeThere are infinitely many primes, but only a very small number of primes can be expressed in the form of 2p-1 (P is prime). In the prime number not greater than 257, when p=2, 3, 5, 7, 13, 17, 19, 31, 67, 127, 257, 2p-1 is prime, others are composite. The preceding 7 numbers (i.e., 2, 3, 5, 7, 13, 17, 19) have been confirmed by previous generations, and the subsequent 4 numbers (i.e. 31, 67, 127, 257) are the inferences of Mason's own. Fo

For a prime A,2^a-1 is called the mason number. If the 2^a-1 is a prime number, it is called the Mason Prime.We know that if a is composite, then 2^a-1 must not be a prime number.2^a-1 is a prime number, a must be a prime number.If A is a prime number, then the 2^a-1 can be a prime number, or it can be composite.UnsignedLong LongMulti_pow (unsignedLong Longx,unsignedLong Longx1,unsignedLong LongMoD) {unsign