279 (number)

← 278 279 280 →
← 200 210 220 230 240 250 260 270 280 290 → List of numbers ; Integers ; ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred seventy-nine
Ordinal	279th; (two hundred seventy-ninth)
Factorization	32 × 31
Divisors	1, 3, 9, 31, 93, 279
Greek numeral	ΣΟΘ´
Roman numeral	CCLXXIX, cclxxix
Binary	1000101112
Ternary	1011003
Senary	11436
Octal	4278
Duodecimal	1B312
Hexadecimal	11716

Last updated March 25, 2025

279 (two hundred [and] seventy-nine) is the natural number following 278 and preceding 280.

In mathematics

279 is an odd composite number with two prime factors.^[1]
Waring’s Conjecture is g(n)=2n+⌊(3/2)n⌋-2. When 8 is plugged in for n, the result is 279. That means that any positive integer can be formed with at most 279 numbers to the 8th power.^[2]
279 is the smallest number whose product of digits is 7 times the sum of its digits.
279 can be written as the sum of 4 nonzero perfect squares.^[3]

References

↑ "Facts about the integer". mathworld.wolfram.com.
↑ "Waring's Problem and Conjecture". mathworld.wolfram.com.
↑ Sloane, N. J. A. (ed.). "SequenceA004215(Numbers that are the sum of 4 but no fewer nonzero squares)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.

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[1] "Facts about the integer". mathworld.wolfram.com.

[2] "Waring's Problem and Conjecture". mathworld.wolfram.com.

[3] Sloane, N. J. A. (ed.). "SequenceA004215(Numbers that are the sum of 4 but no fewer nonzero squares)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.

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