276 (number)

276 (two hundred [and] seventy-six) is the natural number following 275 and preceding 277.

← 275 276 277 →
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Cardinal	two hundred seventy-six
Ordinal	276th (two hundred seventy-sixth)
Factorization	2^2 × 3 × 23
Greek numeral	ΣΟϚ´
Roman numeral	CCLXXVI
Binary	1000101002
Ternary	1010203
Octal	4248
Duodecimal	1B012
Hexadecimal	11416

Mathematical properties

276 is:

• the sum of 3 consecutive fifth powers (276 = 1⁵ + 2⁵ + 3⁵).[1]
• a triangular number.
• a hexagonal number.
• a centered pentagonal number.[2]
• a refactorable number.[3]
• an untouchable number.[4]
• the lowest number whose aliquot sequence has not yet been fully determined.[5]
• the sum of twelve consecutive prime numbers (5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43).
• a Harshad number in bases 2, 3, 4, 5, 6, 7, 9, 11, 12, 13, 16 (and 130 other bases).
• palindromic in bases 8 (424₈), and a repdigit in bases 22 (CC₂₂), 45 (66₄₅), 68 (44₆₈), 91 (33₉₁), 137 (22₁₃₇) and 275.

Other occurrences

According to the Bible, 276 was the number of people saved from the shipwreck mentioned in Acts 27:37.

276 is the highest number of rounds in boxing history, in a bare-knuckle fight in 1825 that saw Jack Jones beat Patsy Tunney after 4hr 30min.[6]

276 is the area code for southwest Virginia.

See also

• The years 276 and 276 BC
• List of highways numbered 276
• The asteroid 276 Adelheid
• United Nations Security Council Resolution 276

References

1. What's Special About This Number?
2. "Sloane's A005891 : Centered pentagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
3. "Refactorable number". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. 2016-04-18. Retrieved 2016-04-18.
4. "Untouchable number". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. 2016-04-18. Retrieved 2016-04-18.
5. Aliquot Sequences
6. Today's Number: 276