Primes / Is 547 prime?

Is 547 a Prime Number?

Yes

547 is prime: for 547, testing every prime up to √547 ≈ 23.4 (namely 2, 3, 5, 7, 11, 13, 17, 19, 23) finds no divisor. 547 sits between primes 541 and 557, 6 below and 10 above. 547 shares no factor with 2-12; 547's divisors start beyond that range. 547 is odd, digit sum 16 for 547, digital root 7 for 547. 547 has 3 primes within 10 of 547.