50 pairs.........of 101.................50 * 101 = 5050..........................50 pairs.............50 2's.......50 two's..........like 14i .............becomes.......1/4 = 0.25.........a five and a 2...................101 is the 26th prime.........................................gives u a fast way to add up 1 - 100............where all the 1st 25 primes are at............................