Thesaurus.com Glitch

Its a tad bit odd, atleast I thought so. BUt click this link :

http://thesaurus.reference.com/searc...lles%27%20heel

See if you get an odd number like : 5869898819461059040 entries found for achilles\' heel.

Was doing some work, and accidently typoed. When I hit enter, I got 65356 - recognizing that number, I hit it again, and again, and started getting really wierd numbers lol.