| ||||
|---|---|---|---|---|
| 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 [and] fifty-four) is the natural number following 253 and preceding 255.
In mathematics[edit]
- It is a deficient number, since the sum of its divisors (excluding the same number) is 130 < 254.[1][better source needed]
- It is a semiprime number.[2][3][1] Moreover, in American English, its name has a semiprime number of syllables.[2]
- It is a square-free integer.[4]
- It is a nontotient.[5]
- It is a lazy caterer number.[6]
- It is a congruent number.[4]
References[edit]
- ^ a b "Is 254 a prime number?". www.numbers.education. Retrieved 2021-07-29.
- ^ a b "A230956 - OEIS". oeis.org. Retrieved 2021-07-29.
- ^ "254 (Number)". metanumbers.com. Retrieved 2021-07-29.
- ^ a b 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.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction