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Search options not deleted user 71603

For challenges about identifying and manipulating prime numbers

1 vote

Do I have a prime twin?

JavaScript(ES6), 54 bytes a=x=>f(x)&(f(x+2)|f(x-2));f=(n,x=n)=>n%--x?f(n,x):x==1 a=x=>f(x)&(f(x+2)|f(x-2));f=(n,x=n)=>n%--x?f(n,x):x==1 console.log("True") console.log("------------------ …
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