adding more primes and optimized function to return faster

Author: archmoj

src/traces/surface/convert.js

@@ -127,10 +127,21 @@ var shortPrimes = [
     1601, 1607, 1609, 1613, 1619, 1621, 1627, 1637, 1657, 1663, 1667, 1669, 1693, 1697, 1699,
     1709, 1721, 1723, 1733, 1741, 1747, 1753, 1759, 1777, 1783, 1787, 1789,
     1801, 1811, 1823, 1831, 1847, 1861, 1867, 1871, 1873, 1877, 1879, 1889,
-    1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973, 1979, 1987, 1993, 1997, 1999
+    1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973, 1979, 1987, 1993, 1997, 1999,
+    2003, 2011, 2017, 2027, 2029, 2039, 2053, 2063, 2069, 2081, 2083, 2087, 2089, 2099,
+    2111, 2113, 2129, 2131, 2137, 2141, 2143, 2153, 2161, 2179,
+    2203, 2207, 2213, 2221, 2237, 2239, 2243, 2251, 2267, 2269, 2273, 2281, 2287, 2293, 2297,
+    2309, 2311, 2333, 2339, 2341, 2347, 2351, 2357, 2371, 2377, 2381, 2383, 2389, 2393, 2399,
+    2411, 2417, 2423, 2437, 2441, 2447, 2459, 2467, 2473, 2477,
+    2503, 2521, 2531, 2539, 2543, 2549, 2551, 2557, 2579, 2591, 2593,
+    2609, 2617, 2621, 2633, 2647, 2657, 2659, 2663, 2671, 2677, 2683, 2687, 2689, 2693, 2699,
+    2707, 2711, 2713, 2719, 2729, 2731, 2741, 2749, 2753, 2767, 2777, 2789, 2791, 2797,
+    2801, 2803, 2819, 2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887, 2897,
+    2903, 2909, 2917, 2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999
 ];
 
 function getPow(a, b) {
+    if(a < b) return 0;
     var n = 0;
     while(Math.floor(a % b) === 0) {
         a /= b;