Factors of 143

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What are the Factors of 143?

Answer

Factors of 143:

1, 11, 13, 143

4 factors · 143 = 11 × 13 · composite

Underlined — prime: 11, 13 · 1 — neither prime nor composite · others — composite

Factor pairs of 143

2 pairs: 1 × 143 · 11 × 13

Past √143 ≈ 11.96 every pair would repeat one already found — so checking stops at 11.

143 = 11 × 13 → (1 + 1) × (1 + 1) = 4 factors: add 1 to each exponent and multiply.

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See Also

Prime Number Checker - Find out whether a given number is Prime or not
Prime Factorization - Prime Factorization Calculator
Prime Numbers List - List of all Prime Numbers - how many Prime numbers are between

Recalculate with different values ↑

Factors Table

Number	Factors
128	1, 2, 4, 8, 16, 32, 64, 128
129	1, 3, 43, 129
130	1, 2, 5, 10, 13, 26, 65, 130
131	1, 131
132	1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132
133	1, 7, 19, 133
134	1, 2, 67, 134
135	1, 3, 5, 9, 15, 27, 45, 135
136	1, 2, 4, 8, 17, 34, 68, 136
137	1, 137
138	1, 2, 3, 6, 23, 46, 69, 138
139	1, 139
140	1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140
141	1, 3, 47, 141
142	1, 2, 71, 142
143	1, 11, 13, 143
144	1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
145	1, 5, 29, 145
146	1, 2, 73, 146
147	1, 3, 7, 21, 49, 147
148	1, 2, 4, 37, 74, 148
149	1, 149
150	1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
151	1, 151
152	1, 2, 4, 8, 19, 38, 76, 152
153	1, 3, 9, 17, 51, 153
154	1, 2, 7, 11, 14, 22, 77, 154
155	1, 5, 31, 155
156	1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156
157	1, 157

FAQ

What are the Factors of 143?

Factors of 143: 1, 11, 13, 143

How many factors does 143 have?

Number 143 has 4 factors

How many Factor Pairs does 143 have?

Number 143 has 2 factor pairs

Is 143 a prime or composite number?

Composite: 143 = 11 × 13, so it has 4 factors — a prime has exactly two.

How many factors does 143 have excluding 1 and 143?

2: 11 and 13.