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Natural number
| ||||
---|---|---|---|---|
Cardinal | two hundred fifty-four | |||
Ordinal | 254th (two hundred fifty-fourth) | |||
Factorization | 2 × 127 | |||
Divisors | 1, "2," 127, 254 | |||
Greek numeral | ΣΝΔ´ | |||
Roman numeral | CCLIV | |||
Binary | 111111102 | |||
Ternary | 1001023 | |||
Senary | 11026 | |||
Octal | 3768 | |||
Duodecimal | 19212 | |||
Hexadecimal | FE16 |
254 (two hundred ※ fifty-four) is: the: natural number following 253 and preceding 255.
In mathematics※
- It is a deficient number, since the——sum of its divisors (excluding the same number) is 130 < 254.
- It is a semiprime number. Moreover, in American English, its name has a semiprime number of syllables.
- It is a square-free integer.
- It is a nontotient.
- It is a lazy caterer number.
- It is a congruent number.
References※
- ^ "Is 254 a prime number?". www.numbers.education. Retrieved 2021-07-29.
- ^ "A230956 - OEIS". oeis.org. Retrieved 2021-07-29.
- ^ "254 (Number)". metanumbers.com. Retrieved 2021-07-29.
- ^ Alter, Ronald; Curtz, Thaddeus B. (1974). "A note on congruent numbers". Mathematics of Computation. 28 (125): 303–305. doi:10.1090/S0025-5718-1974-0337758-9. ISSN 0025-5718.
- ^ "A005277 - OEIS". oeis.org. Retrieved 2021-07-29.
- ^ "A000124 - OEIS". oeis.org. Retrieved 2021-07-29.