Why the downvotes? This is RSA-2048, which is in fact composite and is the product of two unknown large primes. Judging by the self-replies of goodestheart, this is what they are looking for, a non-prime that looks like a prime. It might be too well known or there might exist some simple primality test that it fails, but numbers like this one seem to be close to the perfect answer to the question.
25195908475657893494027183240048398571429282126204032027777137836043662020707595556264018525880784406918290641249515082189298559149176184502808489120072844992687392807287776735971418347270261896375014971824691165077613379859095700097330459748808428401797429100642458691817195118746121515172654632282216869987549182422433637259085141865462043576798423387184774447920739934236584823824281198163815010674810451660377306056201619676256133844143603833904414952634432190114657544454178424020924616515723350778707749817125772467962926386356373289912154831438167899885040445364023527381951378636564391212010397122822120720357
Why the downvotes? This is RSA-2048, which is in fact composite and is the product of two unknown large primes. Judging by the self-replies of goodestheart, this is what they are looking for, a non-prime that looks like a prime. It might be too well known or there might exist some simple primality test that it fails, but numbers like this one seem to be close to the perfect answer to the question.
It’s a great answer, but I think folks are turning up to defend the Good Hearts from being Goodharted