166

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166 < 165 | 167 >
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

166 is the number following 165 and preceding 167.

Properties

• Its factors are 1, 2, 83 and 166, making it a composite number. It is also a squarefree number.
• 166 is an even number .
• 166 is an unhappy number.
  

• 166 is a centered hendecagonal number.
  
• 166 is deficient.
  
• Its prime factorization is 2¹ × 83¹.
  

Approximations

Notation	Lower bound	Upper bound
Up-arrow notation	13 ↑ 2
Scientific notation	1.66 x 102	1.661 x 102
Slow-growing hierarchy	\(g_{\omega^{\omega}}(3)\)	\(g_{\omega^{\omega}}(4)\)
Copy notation	1[3]	2[3]
Chained arrow notation	13 → 2
Bowers' Exploding Array Function/Bird's array notation	{13,2}
Fast-growing hierarchy	f1(82)	f1(83)
Hardy hierarchy	Hω(83)	Hω(83)
Middle-growing hierarchy	m(ω,7)	m(ω,8)
Hyper-E notation	E2.2201
Hyper-E notation (non-10 base)	\(E[13]2\)
Hyperfactorial array notation	5!	6!
X-Sequence Hyper-Exponential Notation	13{1}2
Steinhaus-Moser Notation	3[3]	4[3]
PlantStar's Debut Notation	[1]	[2]
H* function	H(-0.3)	H(-0.2)
Bashicu matrix system with respect to version 4	(0)[12]	(0)[13]
m(n) map	m(1)(3)	m(1)(4)
s(n) map	\(s(1)(\lambda x . x+1)(82)\)	\(s(1)(\lambda x . x+1)(83)\)