108

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108 < 107 | 109 >
All Numbers
100	101	102	103	104	105	106	107	108	109
110	111	112	113	114	115	116	117	118	119
120	121	122	123	124	125	126	127	128	129
130	131	132	133	134	135	136	137	138	139
140	141	142	143	144	145	146	147	148	149
150	151	152	153	154	155	156	157	158	159
160	161	162	163	164	165	166	167	168	169
170	171	172	173	174	175	176	177	178	179
180	181	182	183	184	185	186	187	188	189
190	191	192	193	194	195	196	197	198	199

108 is the number following 107 and preceding 109.

Properties

• Its factors are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54 and 108, making it a composite number.
• 108 is an even number .
• 108 is an unhappy number.
  

• 108 is abundant.
  
• Its prime factorization is 2² × 3³.
  

• It is the 3rd hyperfactorial number, since it is equal to \(3^3 \times 2^2 \times 1^1\).
• It is the number of playing cards in an UNO deck, and the atomic number of the element hassium, which had the systematic symbol Uno.

Approximations

Notation	Lower bound	Upper bound
Up-arrow notation	10 ↑ 2
Scientific notation	1.08 x 102	1.081 x 102
Slow-growing hierarchy	\(g_{\omega^{\omega}}(3)\)	\(g_{\omega^{\omega}}(4)\)
Copy notation	9[2]	1[3]
Chained arrow notation	10 → 2
Bowers' Exploding Array Function/Bird's array notation	{10,2}
Fast-growing hierarchy	f1(53)	f1(54)
Hardy hierarchy	Hω(54)	Hω(54)
Middle-growing hierarchy	m(ω,6)	m(ω,7)
Hyper-E notation	E2.0334
Hyper-E notation (non-10 base)	\(E[10]2\)
Hyperfactorial array notation	4!	5!
X-Sequence Hyper-Exponential Notation	10{1}2
Steinhaus-Moser Notation	3[3]	4[3]
PlantStar's Debut Notation	[1]	[2]
H* function	H(-0.4)	H(-0.3)
Bashicu matrix system with respect to version 4	(0)[10]	(0)[11]
m(n) map	m(1)(3)	m(1)(4)
s(n) map	\(s(1)(\lambda x . x+1)(53)\)	\(s(1)(\lambda x . x+1)(54)\)