Numbers 1600-1699

A page of the Numeropedia - the Special Encyclopedia of Numbers

All Numbers  &  [1K…) * [2K…) * [3K…) * [4K…) * [5K…) * [6K…) * [7K…) * [8K…) * [9K…)  & [10K] & [100K]

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q - ...

1,600

[Calendar]  This year is a leap year, following the adoption of the current Gregorian calendar, created by Pope Gregory XIII in 1582 to reform the old Julian calendar.

[Calendar]  The last year of the 16th century.

[EECS]  1.6K(W) is one of standard numerical values for resistors (of tolerance class 5%).

[Education]  The best possible SAT (Scholastic Aptitude Test) combined (Verbal and Mathematics) score.

[History]  The address of the White House is 1600 Pennsylvania Avenue NW, Washington, DC 20500. It really locates in ZIP Code 20006.

[Movie]  Name of TV show/series or movie: “Murder at 1600”.

1,601

[Calendar]  The first year of the 17th century.

[Math.]  A prime number.

1,604

[Literature]  The year Samuel Johnson invented English dictionary.

1,607

[Math.]  A prime number.

1,608

[Tech.]  The year Hans Lippershey (Dutch) invented refracting telescope.

1,609

[Math.]  A prime number.

1,609.344

[Measure]  1 mile = 1,609.344 m(U.S. customary and metric units for linear measures).

1,610

[Tech.]  Radio station AM 1610 is ussually for traffic information.

1,613

[Math.]  A prime number.

1,619

[Math.]  A prime number.

1,620

[Math.]  Sum (in degrees) of all internal angles of an 11-side polygon.

1,621

[Math.]  A prime number.

1,625

[Math.]  Its odd powers end with 5625. Its even powers end with 0625.

1,627

[Math.]  A prime number.

1,633

[Math.]  Square and cube of number 1633 use different digits: 16332 = 2,666,689 and 16333 = 4,354,703,137.

1,633

[Tech.]  The Dual Tone Multi-Frequency (DTMF) Keypad

 Frequency 1209 Hz 1336 Hz 1477 Hz 1633 Hz 697 Hz 1 2 3 A 770 Hz 4 5 6 B 852 Hz 7 8 9 C 941 Hz * 0 # D

1,636

[Math.]  16364 = 7,163,630,838,016.

1,637

[Math.]  A prime number.

1,653

[Math.]  A triangular number (sum of all integers from 1 to 57): 1653 = 1+2+…+56+57.

1,657

[Math.]  A prime number.

1,663

[Math.]  A prime number.

1,665

[Math.]  Inserting 72 between 2 digits 2 in the square number 225 = 152 and repeatedly inserting numbers 72 between the digits 7 and 2 yields other squares 27225 = 1652, 2772225  = 16652, 277722225 = 166652, 27777222225 = 1666652, 2777772222225 = 16666652

1,666

[Language]  A largest number that is equal to the concatenation of all Roman numerals, where each letter appears only once: MDCLXVI.

[Math.]  166,650,003,333 = 16663+50003+33333.

1,000,000,166,650,003,333 = 10000003+16663+50003+33333.

1,667

[Geology]  The Taipei 101, the tallest building in the world in 2003: 101 stories and 1667 feet tall (508-meter). The CN Tower, a 553.33-meter (1,815 feet 5 inches) communications structure and outlook point in Toronto, Canada, is the highest freestanding tower (as of 2005).

1,667

[Math.]  A prime number.

1,676

[Math.]  1676 = 11+62+73+64 = 15+64+73+62.

1,681

[Math.]  A square number, whose 2-digit halves are also squares (or 4th powers).

[Math.]  The first number disproved a conjecture by the Swiss mathematician Leonhard Euler (1707-1783) that the formula n2+n+41 gives all prime numbers. When n = 40, then n2+n+41 = 1681 = 412 is not a prime number. Even though, for all values of n from 0, 1,…, 39, the numbers n2+n+41 are prime numbers. In fact, for other values of n from –40, –39, to –1, the numbers n2+n+41 are also prime numbers.

1,692

[Math.]  16922 = 2,862,864.

1,693

[Math.]  A prime number.

1,694

[Math.]  16943 = 4,861,163,384, each of its digits 1, 3, 4, 6, and 8, occurring twice.

1,697

[Math.]  A prime number.

1,699

[Math.]  A prime number.