On Feb 6, 9:35*pm, Skipper wrote:
using loop
raw
13035 * 13031
13035 * 13037
13036 * 13056
13037 * 13251
13037 * 13298
13037 * 13299
13044 * 13282
13075 * 13275
13048 * 13031
13048 * 13055
13099 * 13066
13099 * 13077
13099 * 13252
13099 * 13692

result
13035 * 13037 * 13031 * * * * *
13036 * 13056 * * * * * * * * *
13037 * 13299 * 13298 * 13251 *
13044 * 13282 * * * * * * * * *
13075 * 13275 * * * * * * * * *
13048 * 13055 * 13031 * * * * *
13099 * 13692 * 13252 * 13077 * 13066

That's quite impressive.