Cody

# Problem 525. Mersenne Primes

Solution 2025938

Submitted on 18 Nov 2019 at 4:22
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### Test Suite

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

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

3   Fail
x = 157; 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(log(x+1)/log(2))); Error in Test3 (line 3) assert(isequal(isMersenne(x),y_correct))

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

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

6   Pass
x = 524287; y_correct = true; 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(log(x+1)/log(2))); Error in Test7 (line 3) assert(isequal(isMersenne(x),y_correct))