////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den3/Page13.txt
//
////////////////////////////////////////////////////////////////

Generator:
R(7,4,7,8449)

Problem:
1005309*x_2+4337606*x_4=1280610 (mod 6386413)
7851646*x_1+726501*x_2+7584089*x_4=7308318 (mod 6723148)
6362167*x_2+1902576*x_4=944739 (mod 6090437)
6366822*x_1+43791*x_2+3829375*x_3+2502798*x_4=8043240 (mod 9943693)
2864273*x_1+5580866*x_3+8076375*x_4=6104089 (mod 1062508)
6159057*x_1+7471128*x_2+8605459*x_3=617483 (mod 4578692)
7726081*x_1+3269019*x_4=8756463 (mod 8393809)

Solution:
x_1=1256985000525191420387484628342691495496025573
x_2=2543066850203297070490468763192703911777036612
x_3=3318245988686512814979622990919408138602852538
x_4=2794312411525484475772314097616343695665560032