n=x3+y3+2z3
D5 Sum of four cubes.
in Richard K. Guy, "Unsolve Problems in Number Theory" Second Edition, Springer-Verlag, 1994
Solutions of n=x3+y3+2z3
800 <= n <= 899, max{|x|,|y|,|z|} <= 4*106.
| n | x | y | z |
|---|
| 800 | 5 | 9 | -3 |
| 801 | 7 | 8 | -3 |
| 802 | 3 | 7 | 6 |
| 803 | -2 | 5 | 7 |
| 804 | 15 | -77 | 61 |
| 805 | 13 | 16 | -14 |
| 806 | 5 | -7 | 8 |
| 807 | -1 | -6 | 8 |
| 808 | 7 | -13 | 11 |
| 809 | 6 | 7 | 5 |
| 810 | -1 | 5 | 7 |
| 811 | 0 | 5 | 7 |
| 812 | 1 | 5 | 7 |
| 813 | -6 | 7 | 7 |
| 814 | 4 | 4 | 7 |
| 815 | -16 | 17 | -1 |
| 816 | 135 | 137 | -136 |
| 817 | 6 | 9 | -4 |
| 818 | -7 | 9 | 6 |
| 819 | 2 | 5 | 7 |
| 820 | -167 | 483 | -378 |
| 821 | -5 | -8 | 9 |
| 822 | 7 | 9 | -5 |
| 823 | 1 | 22 | -17 |
| 824 | -271 | 311 | -172 |
| 825 | 680 | 1113 | -946 |
| 826 | 4 | 8 | 5 |
| 827 | 14 | -15 | 9 |
| 828 | 11 | -23 | 18 |
| 829 | 5 | 12 | -8 |
| 830 | -3 | 9 | 4 |
| 831 | 250 | -489 | 370 |
| 832 | 302269 | -599501 | 454558 |
| 833 | -16 | 17 | 2 |
| 834 | 138 | 140 | -139 |
| 835 | -4 | -5 | 8 |
| 836 | -37 | 75 | -57 |
| 837 | 5 | -14 | 12 |
| 838 | 3 | 5 | 7 |
| 839 | 4 | 7 | 6 |
| 840 | 33 | 37 | -35 |
| 841 | 49 | -50 | 16 |
| 842 | -100 | 494 | -391 |
| 843 | -22 | 27 | -16 |
| 844 | 81 | 435 | -346 |
| 845 | -3 | 10 | -4 |
| 846 | 7 | 23 | -18 |
| 847 | 4 | 9 | 3 |
| 848 | 2289 | -5583 | 4327 |
| 849 | -2 | 9 | 4 |
| 850 | -11 | 13 | -2 |
| 851 | -2218 | 2531 | -1384 |
| 852 | 5 | 9 | -1 |
| 853 | 7 | 8 | -1 |
| 854 | 5 | 9 | 0 |
| 855 | 7 | 8 | 0 |
| 856 | -1 | 9 | 4 |
| 857 | 7 | 8 | 1 |
| 858 | 1 | 9 | 4 |
| 859 | -5 | 10 | -2 |
| 860 | -7 | 11 | -4 |
| 861 | 6 | 11 | -7 |
| 862 | 7 | 17 | -13 |
| 863 | -8 | 15 | -10 |
| 864 | 5 | 13 | -9 |
| 865 | 2 | 9 | 4 |
| 866 | -11 | 13 | 0 |
| 867 | 259 | -306 | 178 |
| 868 | -11 | 13 | 1 |
| 869 | 5 | 14 | -10 |
| 870 | 5 | 9 | 2 |
| 871 | 7 | 8 | 2 |
| 872 | -3 | -5 | 8 |
| 873 | 1 | 10 | -4 |
| 874 | -126 | -160 | 145 |
| 875 | 4 | 5 | 7 |
| 876 | -21 | 25 | -14 |
| 877 | -5 | 10 | 1 |
| 878 | -163 | 185 | -100 |
| 879 | 50 | -75 | 53 |
| 880 | 23 | -37 | 27 |
| 881 | -14 | 15 | 5 |
| 882 | -4 | -8 | 9 |
| 883 | -11 | 42 | -33 |
| 884 | 3 | 9 | 4 |
| 885 | 6 | -11 | 10 |
| 886 | 4 | 22 | -17 |
| 887 | 5 | 8 | 5 |
| 888 | 35 | 39 | -37 |
| 889 | 30 | -33 | 17 |
| 890 | 109 | -147 | 98 |
| 891 | -2 | -5 | 8 |
| 892 | -17 | 21 | -12 |
| 893 | -33 | 36 | -17 |
| 894 | -2 | 6 | 7 |
| 895 | 298 | -329 | 166 |
| 896 | -13 | 29 | -22 |
| 897 | 6 | -7 | 8 |
| 898 | -1 | -5 | 8 |
| 899 | 0 | -5 | 8 |
E-mail : kc2h-msm@asahi-net.or.jpHisanori Mishima