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The Number 77 is a Mersenne Number. 7 is an Octahedral Number. 7 is a Lucas Number. 7 is a Centered Hexagonal Number. 7 is a Heptagonal Number. 7 is a Hexagonal Pyramidal Number. 5 can be Partitioned in 7 ways. 7 can be Partitioned in 15 ways. 7 is the number of + signs needed to write the Partitions of 4 Sum of the first 4 Fibonacci numbers= 1 + 1 + 2 + 3 = 7 7 is the number of frieze groups, i.e., the groups consisting of symmetries of the plane whose group of translations is isomorphic to the group of integers. 7 is the maximal number of regions into which 3 lines divide a plane. The 7 Hexagonal (6-fold) crystal classes. The 7 Tetragonal crystal classes. Topologists have been able to prove that 7 colors may be needed on a donut shaped map to ensure that no adjacent areas are the same. There are seven different ways of linking four hexagons together. 7 is the smallest number of integer-sided rectangles that tile a rectangle so that no 2 rectangles share a common length. The Chemical Element Nitrogen has an atomic number of 7. The 7 directions: north, south, east, west, up, down and the center. In Humans: the 7 Endocrine glands. The 7 colors of the rainbow. The 7 double letters of the Hebrew Alphabet. The 7 classical planets. The 7 bodies of the Human microcosm. In Humans: the 7 chakras. Seventh heaven is the farthest of the concentric spheres containing the stars in the Moslem and cabalist systems. Seven is the maximum number of eclipses of the Sun and Moon that can occur in any one year.
Christianity
Film: The Magnificent Seven.
The Year 7 ADIn the year 7 AD Publius Quinctilius Varus is appointed governor of Germany.In the year 7 AD the Illyrians revolt against Roman rule. In the year 7 AD Abgarus of Edessa is deposed as king of Osroene. In the year 7 AD Roman Emperor Caesar Augustus dismisses the Judea ethnarch Herod Archelaus.
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