Primes / Is 520 prime?
Is 520 a Prime Number?
No520 = 2^3 x 5 x 13
520 is NOT prime: 2 × 260 = 520. That makes 2 a genuine divisor of 520 beyond 1 and 520 itself. Fully broken down, 520 = 2^3 × 5 × 13, for 16 divisors total. 520 sits between primes 509 and 521, 11 below and 1 above. 520: 2, 4, 5, 8, 10 divide 520 evenly, checked against 2-12. 520 is even, digit sum 7 for 520, digital root 7 for 520. 520 has 2 primes within 10 of 520.