Primes / Is 78 prime?

Is 78 a Prime Number?

No78 = 2 x 3 x 13

78 is NOT prime: 2 × 39 = 78. That makes 2 a genuine divisor of 78 beyond 1 and 78 itself. Fully broken down, 78 = 2 × 3 × 13, for 8 divisors total. 78 sits between primes 73 and 79, 5 below and 1 above. 78: 2, 3, 6 divide 78 evenly, checked against 2-12. 78 is even, digit sum 15 for 78, digital root 6 for 78. 78 has 4 primes within 10 of 78.