四

2.93×10¹¹

1.06×10¹²

1.06×10¹⁵

1.06×10¹⁸

1.06×10¹⁸

6.59×10³⁶

1

1×10¹⁰

1×10¹⁵

7.78×10¹⁷

2.52×10¹⁴

2.52×10¹⁷

2.52×10¹¹