1999

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1999 < 1998 | 2000 >
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1999 is the number following 1998 and preceding 2000.

Properties

• It is the 303rd prime number.
• 1999 is an odd number .
• 1999 is an unhappy number.
  

• 1999 is deficient.

Approximations

Notation	Lower bound	Upper bound
Up-arrow notation	45 ↑ 2
Scientific notation	1.999 x 103	2 x 103
Slow-growing hierarchy	\(g_{\omega^{\omega}}(4)\)	\(g_{\omega^{\omega}}(5)\)
Copy notation	19[2]	20[2]
Chained arrow notation	45 → 2
Bowers' Exploding Array Function/Bird's array notation	{45,2}
Fast-growing hierarchy	f2(7)	f2(8)
Hardy hierarchy	Hω(999)	Hω(1000)
Middle-growing hierarchy	m(ω,10)	m(ω,11)
Hyper-E notation	E3.3008
Hyper-E notation (non-10 base)	\(E[45]2\)
Hyperfactorial array notation	6!	7!
X-Sequence Hyper-Exponential Notation	45{1}2
Steinhaus-Moser Notation	4[3]	5[3]
PlantStar's Debut Notation	[1]	[2]
H* function	H(0.1)	H(0.2)
Bashicu matrix system with respect to version 4	(0)[44]	(0)[45]
m(n) map	m(1)(4)	m(1)(5)
s(n) map	\(s(1)(\lambda x . x+1)(998)\)	\(s(1)(\lambda x . x+1)(999)\)

Sources

1999 is equal to 2000 minus 1.

Properties

• It is a prime number.
• It is a centered triangular number

In popular culture

• There is a song by Prince titled 1999.