Cody

# Problem 525. Mersenne Primes

Solution 2287233

Submitted on 16 May 2020
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

### Test Suite

Test Status Code Input and Output
1   Pass
x = 3; y_correct = true; assert(isequal(isMersenne(x),y_correct))

y = logical 1

2   Fail
x = 127; y_correct = true; assert(isequal(isMersenne(x),y_correct))

y = logical 0

Assertion failed.

3   Pass
x = 157; y_correct = false; assert(isequal(isMersenne(x),y_correct))

y = logical 0

4   Fail
x = 2047; y_correct = false; assert(isequal(isMersenne(x),y_correct))

Error using isprime (line 19) All entries of X must be nonnegative integers. Error in isMersenne (line 2) y = isprime(x)&isprime(2^x - 1) Error in Test4 (line 3) assert(isequal(isMersenne(x),y_correct))

5   Fail
x = 8191; y_correct = true; assert(isequal(isMersenne(x),y_correct))

Error using isprime (line 19) All entries of X must be nonnegative integers. Error in isMersenne (line 2) y = isprime(x)&isprime(2^x - 1) Error in Test5 (line 3) assert(isequal(isMersenne(x),y_correct))

6   Fail
x = 524287; y_correct = true; assert(isequal(isMersenne(x),y_correct))

Error using isprime (line 19) All entries of X must be nonnegative integers. Error in isMersenne (line 2) y = isprime(x)&isprime(2^x - 1) Error in Test6 (line 3) assert(isequal(isMersenne(x),y_correct))

7   Fail
x = 536870911; y_correct = false; assert(isequal(isMersenne(x),y_correct))

Error using isprime (line 19) All entries of X must be nonnegative integers. Error in isMersenne (line 2) y = isprime(x)&isprime(2^x - 1) Error in Test7 (line 3) assert(isequal(isMersenne(x),y_correct))