3.141592653589793238462643383279502884197169399375105820974944 59230781640628620899 86280 34825 34211 7067
3.1 6 7 13 20 3--3-5--5 5--3 8-6 6-86--8 3 11
13 = 13 55 113
原文地址:http://www.cnblogs.com/rice808/p/3974603.html