Find the next prime number
Find the next prime number or numbers for given n. For example:
n = 1;
out = 2;
or
n = [5 7];
out = [7 11];
...
1 year ago
Solved
Make a vector of prime numbers
Input(n) - length of vector with prime numbers
Output(v) - vector of prime numbers
Example:
* n=1; v=2
* n=3; v=[2 3 5...
1 year ago
Solved
Largest Twin Primes
<http://en.wikipedia.org/wiki/Twin_prime Twin primes> are primes p1, p2 = p1 + 2 such that both p1 and p2 are prime numbers. Giv...
1 year ago
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Mersenne Primes
A Mersenne prime is a prime number of the form M = 2^p - 1, where p is another prime number. For example, 31 is a Mersenne prim...
Sophie Germain prime
In number theory, a prime number p is a *Sophie Germain prime* if 2p + 1 is also prime. For example, 23 is a Sophie Germain prim...
1 year ago
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Leap Year
According to Gregorian Calender(which is in use now, in many countries),decide whether a given year is a leap year or not.
Give...
1 year ago
Solved
leap year
find the number of leap years within the given time interval
1 year ago
Solved
Friday or not
I love Friday. Please tell me whether the day is Friday.
Dateformat is 'yyyy-mm-dd' or 'dd-mmm-yyyy' or 'mm/dd/yyyy'.
Exa...