A gap of 20........40 - 60..........centered about 50.............................5 primes.................3 in the 1st ten..............................and two in the 2nd.........a 3 and a 2...........................41, 43, 47, 53, 59.................5 primes.................between 40 - 60..............................41 is the 13th prime......sym galore.............the square root of 13 starts out..........3.60555......................3 fives..............5/3 = 1.666.........like the gold ratio.....................................53 is the 1st prime over 50............man oh man......................