Problem 44385. Extra safe primes

Solution 2023166

Submitted on 15 Nov 2019

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Test	Status	Code Input and Output
1	Fail	x = 0; assert(isequal(isextrasafe(x),false)) Assertion failed.
2	Fail	x = 5; assert(isequal(isextrasafe(x),false)) Assertion failed.
3	Pass	x = 7; assert(isequal(isextrasafe(x),false))
4	Pass	x = 11; assert(isequal(isextrasafe(x),true))
5	Fail	x = 15; assert(isequal(isextrasafe(x),false)) Assertion failed.
6	Pass	x = 23; assert(isequal(isextrasafe(x),true))
7	Pass	x = 71; assert(isequal(isextrasafe(x),false))
8	Pass	x = 719; assert(isequal(isextrasafe(x),true))
9	Pass	x = 2039; assert(isequal(isextrasafe(x),true))
10	Fail	x = 2040; assert(isequal(isextrasafe(x),false)) Assertion failed.
11	Pass	x = 5807; assert(isequal(isextrasafe(x),true))