199 is the natural number between 198 and 200. It is also a prime number.

In mathematics

• 199 is a prime number, a twin prime with 197, and also a permutable prime.
• Coming at the end of a prime quadruplet, 199 sets a record low of the Mertens function, -8.

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Upper Paleolithic
• 10th millennium BC | 9th millennium BC | 8th millennium BC
• 7th millennium BC | 6th millennium BC | 5th millennium BC

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The 1st century was that century that lasted from 1 to 100 according the Gregorian calendar. It is considered part of the Classical era, epoch, or historical period
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The 2nd century is the period from 101 to 200 in accordance with the Julian calendar in the Christian Era. It is considered part of the Classical era, epoch, or historical period
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The 3rd century is the period from 201 to 300 in accordance with the Julian calendar in the Christian Era.

Overview

After the death of Commodus in the previous century the Roman Empire was plunged into a civil war.
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list of decades which have articles with more information about them.

During the twentieth century, it became popular to look at that century's decades as historical entities in themselves.
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Centuries: 1st century - 2nd century - 3rd century

130s 140s 150s - 160s - 170s 180s 190s
160 161 162 163 164
165 166 167 168 169

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Events and Trends

• Execution of Justin Martyr, Rome

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Centuries: 1st century - 2nd century - 3rd century

140s 150s 160s - 170s - 180s 190s 200s
170 171 172 173 174
175 176 177 178 179

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Events and Trends

• Marcomannic Wars.

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Centuries: 1st century - 2nd century - 3rd century

150s 160s 170s - 180s - 190s 200s 210s
180 181 182 183 184
185 186 187 188 189

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Events and Trends

• The end of the Pax Romana

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Centuries: 1st century - 2nd century - 3rd century

160s 170s 180s - 190s - 200s 210s 220s
190 191 192 193 194
195 196 197 198 199

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Events and Trends

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Centuries: 2nd century - 3rd century - 4th century

170s 180s 190s - 200s - 210s 220s 230s
200 201 202 203 204
205 206 207 208 209

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Events and Trends

Significant people

• Septimius Severus, Roman Emperor

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Centuries: 2nd century - 3rd century - 4th century

180s 190s 200s - 210s - 220s 230s 240s
210 211 212 213 214
215 216 217 218 219

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Events and Trends

Significant people

• Cao Cao, King of Cao Wei

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Centuries: 2nd century - 3rd century - 4th century

190s 200s 210s - 220s - 230s 240s 250s
220 221 222 223 224
225 226 227 228 229

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Events and Trends

Significant people

• Alexander Severus, Roman Emperor

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This page indexes the individual years pages.

Twenty-first century

2100 - 2099 - 2098 - 2097 - 2096 - 2095 - 2094 - 2093 - 2092 - 2091

2090 - 2089 - 2088 - 2087 - 2086 - 2085 - 2084 - 2083 - 2082 - 2081

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2nd century - 3rd century
160s  170s  180s  - 190s -  200s  210s  220s
192 193 194 - 195 - 196 197 198
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2nd century - 3rd century
160s  170s  180s  - 190s -  200s  210s  220s
193 194 195 - 196 - 197 198 199
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2nd century - 3rd century
160s  170s  180s  - 190s -  200s  210s  220s
194 195 196 - 197 - 198 199 200
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2nd century - 3rd century
160s  170s  180s  - 190s -  200s  210s  220s
195 196 197 - 198 - 199 200 201
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2nd century - 3rd century
170s  180s  190s  - 200s -  210s  220s  230s
197 198 199 - 200 - 201 202 203
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3rd century - 4th century
170s  180s  190s  - 200s -  210s  220s  230s
198 199 200 - 201 - 202 203 204
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China - Xian, Emperor of China (189-220)

Korea (Three Kingdoms Period)

Baekje - Chogo, King of Baekje (166–214)

Gaya Confederacy
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Gregorian calendar is the most widely used calendar in the world. A modification of the Julian calendar, it was first proposed by the Calabrian doctor Aloysius Lilius, and was decreed by Pope Gregory XIII, for whom it was named, on 24 February 1582 via the papal bull
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Ab Urbe condita (literally, "from the city, having been founded") is a monumental history of Rome, from its legendary founding (ab Urbe condita, dated to 753 BC by Varro and most modern scholars). The book was written by Titus Livius (around 59 BC–AD 17).
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Armenian calendar uses the Armenian numerals. It begins in AD 552 as the start of the Armenian era.

Dates are marked by the letters ԹՎ
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Buddhist calendar is used on mainland Southeast Asia in the countries of Cambodia, Laos, Thailand, Myanmar (formerly Burma) and Sri Lanka in several related forms. It is a lunisolar calendar having months that are alternately 29 and 30 days, with an intercalated day and a 30-day
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Chinese calendar is a lunisolar calendar, incorporating elements of a lunar calendar with those of a solar calendar. In China today, the Gregorian calendar is used for most day to day activities, but the Chinese calendar is still used for marking traditional Chinese holidays such
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The Chinese sexagenary cycle (Chinese: 干支; Pinyin: gānzhī) is a cyclic numeral system of 60 combinations of the two basic cycles, the ten Heavenly Stems (天干;
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The Chinese sexagenary cycle (Chinese: 干支; Pinyin: gānzhī) is a cyclic numeral system of 60 combinations of the two basic cycles, the ten Heavenly Stems (天干;
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Coptic calendar, also called the Alexandrian calendar, is used by the Coptic Orthodox Church. This calendar is based on the ancient Egyptian calendar. To avoid the calendar creep of the latter, a reform of the ancient Egyptian calendar was introduced at the time of Ptolemy
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Ethiopian calendar (Amharic: የኢትዮጵያ ዘመን አቆጣጠር ye'Ītyōṗṗyā zemen āḳoṭaṭer), also called the
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