69 (number)
Natural number / From Wikipedia, the free encyclopedia
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69 (sixty-nine; LXIX) is the natural number following 68 and preceding 70. An odd number and a composite number, 69 is divisible by 1, 3, 23 and 69. 69 is a semiprime because it is a natural number that is the product of exactly two prime numbers (3 and 23), and an interprime between the numbers of 67 and 71. Because 69 is not divisible by any square number other than 1, it is categorised as a square-free integer. 69 is also a Blum integer since the two factors of 69 are both Gaussian primes. In number theory, 69 is a deficient number, arithmetic number and a congruent number.
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Cardinal | sixty-nine | |||
Ordinal | 69th (sixty-ninth) | |||
Factorization | 3 × 23 | |||
Divisors | 1, 3, 23, 69 | |||
Greek numeral | ΞΘ´ | |||
Roman numeral | LXIX | |||
Binary | 10001012 | |||
Ternary | 21203 | |||
Senary | 1536 | |||
Octal | 1058 | |||
Duodecimal | 5912 | |||
Hexadecimal | 4516 |
In reference to 69ing, a sex position in which two partners align themselves to simultaneously achieve oral sex, the number 69 itself has become an Internet meme as an inherently funny number in which users will respond to any occurrence of the number with the word "nice" to draw specific attention to it. Because of its association with the sex position and resulting meme, 69 has been humorously named "the sex number".