Is 89 a prime number?

Prime Number Checker
Number

Is 89 a prime or composite number?

Answer

Number 89 is a Prime

89 has exactly two divisors — 1 and 89 — so it is a prime.

Primes up to √89

9² = 81 ≤ 89 < 100 = 10², so it is enough to try primes up to 9

  • ÷2 does not divide
  • ÷3 does not divide
  • ÷5 does not divide
  • ÷7 does not divide

none of the 4 primes up to 9 divides 89 — 89 is prime

Nearest primes: 83 and 97

Related Calculations

See Also

Prime numbers list

NumberIs Prime
74No: 2 × 37
75No: 3 × 5²
76No: 2² × 19
77No: 7 × 11
78No: 2 × 3 × 13
79Yes
80No: 2⁴ × 5
81No: 3⁴
82No: 2 × 41
83Yes
84No: 2² × 3 × 7
85No: 5 × 17
86No: 2 × 43
87No: 3 × 29
88No: 2³ × 11
89Yes
90No: 2 × 3² × 5
91No: 7 × 13
92No: 2² × 23
93No: 3 × 31
94No: 2 × 47
95No: 5 × 19
96No: 2⁵ × 3
97Yes
98No: 2 × 7²
99No: 3² × 11
100No: 2² × 5²
101Yes
102No: 2 × 3 × 17
103Yes

FAQ

Is 89 a prime or composite number?

Number 89 is a Prime

How many factors are in a number 89?

2

How to check if 89 is prime?

Divide 89 by the primes in order: 9² = 81 ≤ 89 < 100 = 10², so it is enough to try primes up to 9. None of the 4 primes up to 9 divides 89, so 89 is prime.

See Also