67 (number)
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|---|---|---|---|---|
| Cardinal | sixty-seven | |||
| Ordinal | 67th (sixty-seventh) | |||
| Factorization | prime | |||
| Prime | 19th | |||
| Divisors | 1, 67 | |||
| Greek numeral | ΞΖ´ | |||
| Roman numeral | LXVII, lxvii | |||
| Binary | 10000112 | |||
| Ternary | 21113 | |||
| Senary | 1516 | |||
| Octal | 1038 | |||
| Duodecimal | 5712 | |||
| Hexadecimal | 4316 | |||
67 (sixty-seven) is the natural number following 66 and preceding 68. It is an odd and prime number.
In mathematics
[edit]67 is:
- the 19th prime number (the next being 71)
- a Chen prime[1]
- an irregular prime[2]
- a lucky prime[3]
- the sum of five consecutive primes (7 + 11 + 13 + 17 + 19)
- a Heegner number[4]
- a Pillai prime since 18! + 1 is divisible by 67, but 67 is not one more than a multiple of 18[5]
- palindromic in quinary (2325) and senary (1516)
- a super-prime (19 is prime)
- an isolated prime (65 and 69 are not prime)
- a sexy prime with 61 and 73
Internet culture
[edit]6-7 is a meme, typically popularized by Generation Alpha. It was originally from a rap song called "Doot Doot (6 7)".[6][7] It is also associated with basketball player; LaMelo Ball, who is 6 ft 7 in (2.01 m) in height.[8] It is cited as part of the brain rot phenomenon — or poor quality digital media.[9]
References
[edit]- ^ "Sloane's A109611: Chen primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2021-01-08.
- ^ "Sloane's A000928 : Irregular primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
- ^ "Sloane's A031157 : Numbers that are both lucky and prime". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
- ^ "Sloane's A003173 : Heegner numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
- ^ "Sloane's A063980 : Pillai primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
- ^ Placido, Dani Di. "What Does '6-7' Mean? The TikTok Meme, Explained". Forbes. Retrieved 2025-10-14.
- ^ Thrasher, Tyler (2025-08-19). "Gen Alpha slang in 2025: The meaning behind words like 'clanker,' '67,' 'crashout'". FOX 5 NY. Retrieved 2025-10-14.
- ^ Hinde, Natasha (2025-07-31). "Kids Keep Saying 'Six-Seven' And Nobody Seems To Know What It Means". HuffPost UK. Retrieved 2025-10-14.
- ^ Robinson, Lauern. "6-7' trend: New 'brain rot' phrase sweeps Aussie classrooms". News.com.au.
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External links
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