77 (number)
Encyclopedia : 7 : 77 : 77N : 77 (number)
77 (seventy-seven) is the natural number following 76 and preceding 78. Seventy-seven is the smallest positive integer requiring five syllables in English.
| Cardinal | 77 seventy-seven |
| Ordinal | 77th seventy-seventh |
| Factorization | [7 \cdot 11] |
| Roman numeral | LXXVII |
| Binary | 1001101 |
| Hexadecimal | 4D |
In mathematics
Seventy-seven is the sum of three squares, 42 + 52 + 62, as well as the sum of the first eight prime numbers.It is possible for a sudoku puzzle to have 77 givens yet lack a unique solution.
In science
- The atomic number of iridium
- Messier object M77, a magnitude 10.5 spiral galaxy in the constellation Cetus
- The New General Catalogue [object] NGC 77, a galaxy in the constellation Cetus
- The Saros [number] of the solar eclipse series which began on -474 July 11 and ended on 788 August 6. The duration of Saros series 77 was 1262.1 years, and it contained 71 solar eclipses.
- The Saros [number] of the lunar eclipse series which began on -190 April 9 and ended on 1090 May 16. The duration of Saros series 77 was 1280.1 years, and it contained 72 lunar eclipses.
In history
During World War II in Sweden at the border with Norway, "77" was used as a Shibboleth (password), because the tricky pronunciation in Swedish made it easy to instantly discern whether the speaker was native Swedish, Norwegian, or German.In other areas
Seventy-seven is also:- The designation of Interstate 77, a freeway that runs from South Carolina to Ohio.
- The designation of the M77 motorway in the UK which forms the most northerly part of the A77 trunk road which links Glasgow to Stranraer.
- The registry of the U.S. Navy's in-construction nuclear aircraft carrier USS George H. W. Bush (CVN-77), named after U.S. President George H. W. Bush.
- Part of the name of a 50's and 60's era television program: 77 Sunset Strip.
- Part of the name of Talking Heads' first album: .
- The year AD 77, 77 BC, or 1977.
- American Airlines Flight 77, a Washington, D.C.-Los Angeles flight, which crashed into The Pentagon in Arlington, Virginia after being hijacked by terrorists on September 11, 2001.
- A sexual position that puns on the number 8: "ate more than 69," in other words, a great deal of sex in the 69 position.
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