Primes / Is 345 prime?

Is 345 a Prime Number?

No345 = 3 x 5 x 23

345 is NOT prime: 3 × 115 = 345. That makes 3 a genuine divisor of 345 beyond 1 and 345 itself. Fully broken down, 345 = 3 × 5 × 23, for 8 divisors total. 345 sits between primes 337 and 347, 8 below and 2 above. 345: 3, 5 divide 345 evenly, checked against 2-12. 345 is odd, digit sum 12 for 345, digital root 3 for 345. 345 has 4 primes within 10 of 345.