After the single-digit numbers, we have our chosen number base10=2×5, which is special nonetheless being triangular in that10=1+2+3+4(remember ten-pin bowling). We then have a pair of twinprimes in 11 and 13, which are two consecutive odd numbers that are both prime, separated by the number 12, which in contrast has many factors for its size. Indeed,12 is the first so-called abundant number, as the the sum of itsproperfactors,those less than the number itself, exceeds the number in question:1+2+3+4+6=16.Thenumber14=2×7maylook undistinguished but, as the paradoxical quip goes, being the first undistinguished number makes it distinguished after all. In15=3×5, we have another triangular number and it is the first odd number that is the product of two proper factors. Ofcourse,16=24 is not only a square but the first fourth power(after 1),making it very special indeed. The pair 17 and 19 are another pair of twin primes, and I leave the reader to make their own observations about the peculiar nature of the numbers 18,20, and so on. For each you can make a claim to fame.