User talk:Angel Luis Garcia

Formula for primes
I reverted your edit. A number is not prime just because it doesn't have certain small prime factors. Here is the smallest counter example for each form: It wouldn't help to increase the prime factor limit to another constant. There will always be composite numbers with larger prime factors. PrimeHunter (talk) 13:35, 3 June 2014 (UTC)
 * 5+6×(5×83+1) = 2501 = 41×61
 * 5+6×(5×91+2) = 2747 = 41×67
 * 5+6×(5×99+3) = 2993 = 41×73
 * 5+6×(5×104+4) = 3149 = 47×67
 * 7+6×(7×59+1) = 2491 = 47×53
 * 7+6×(7×74+2) = 3127 = 53×59
 * 7+6×(7×52+3) = 2209 = 472
 * 7+6×(7×51+4) = 2173 = 41×53
 * 7+6×(7×45+5) = 1927 = 41×47
 * 7+6×(7×39+6) = 1681 = 412