Factors of 77

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What are the Factors of 77?

Answer

Factors of 77:

1, 7, 11, 77

4 factors · 77 = 7 × 11 · composite

Underlined — prime: 7, 11 · 1 — neither prime nor composite · others — composite

Factor pairs of 77

2 pairs: 1 × 77 · 7 × 11

Past √77 ≈ 8.77 every pair would repeat one already found — so checking stops at 8.

77 = 7 × 11 → (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

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Factors Table

Number	Factors
62	1, 2, 31, 62
63	1, 3, 7, 9, 21, 63
64	1, 2, 4, 8, 16, 32, 64
65	1, 5, 13, 65
66	1, 2, 3, 6, 11, 22, 33, 66
67	1, 67
68	1, 2, 4, 17, 34, 68
69	1, 3, 23, 69
70	1, 2, 5, 7, 10, 14, 35, 70
71	1, 71
72	1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
73	1, 73
74	1, 2, 37, 74
75	1, 3, 5, 15, 25, 75
76	1, 2, 4, 19, 38, 76
77	1, 7, 11, 77
78	1, 2, 3, 6, 13, 26, 39, 78
79	1, 79
80	1, 2, 4, 5, 8, 10, 16, 20, 40, 80
81	1, 3, 9, 27, 81
82	1, 2, 41, 82
83	1, 83
84	1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
85	1, 5, 17, 85
86	1, 2, 43, 86
87	1, 3, 29, 87
88	1, 2, 4, 8, 11, 22, 44, 88
89	1, 89
90	1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
91	1, 7, 13, 91

FAQ

What are the Factors of 77?

Factors of 77: 1, 7, 11, 77

How many factors does 77 have?

Number 77 has 4 factors

How many Factor Pairs does 77 have?

Number 77 has 2 factor pairs

Is 77 a prime or composite number?

Composite: 77 = 7 × 11, so it has 4 factors — a prime has exactly two.

How many factors does 77 have excluding 1 and 77?

2: 7 and 11.