Numbers 91,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

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91,000

[EECS]  91K(W) is one of standard numerical values for resistors (of tolerance class 5%).

 

91,009

[Math.]  A sequence of prime numbers of similar pattern: 787, 9109, 111211 and 131413; or even as: 787, 091009, 111211 and 131413.

 

91,125

[Math.]  91,125 = (09+11+25)3 = 453.

 

91,193

[Math.]  Circular prime numbers: all 5 numbers 91193, 11939, 19391, 93911 and 39119 are prime. (They are all “emirp” numbers).

 

91,204

[Math.]  Three square numbers using the same digits: 1482 = 21904, 2032 = 41209 and 3022 = 91204.

 

91,248

[Math.]  912482 = 8,326,197,504, a square number using each of 10 digits 0-9 once. (The 78th of 87 such numbers).

 

91,358 & 91,360 & 91,362

[Zip]  U.S. Postal Zip Code: Thousand Oaks, California 91358, 91360 and 91362.

 

91,573

[Math.]  A prime number of all 5 different odd digits.

 

91,584

[Math.]  Each ratio, 45792/3816 = 73548/6129 = 89532/7461 = 91584/7632 = 12, uses each of 9 digits 1-9 once.

 

91,605

[Math.]  916052 = 8,391,476,025, a square number using each of 10 digits 0-9 once. (The 79th of 87 such numbers).

 

91,753

[Math.]  A prime number of all 5 different odd digits.

 

91nnn

[Zip]  U.S. Postal Zip Codes of California: 90nnn-95nnn, 960nn and 961nn.