Primes / Is 541 prime?

Is 541 a Prime Number?

Yes

541 is prime: for 541, testing every prime up to √541 ≈ 23.3 (namely 2, 3, 5, 7, 11, 13, 17, 19, 23) finds no divisor. 541 sits between primes 523 and 547, 18 below and 6 above. 541 shares no factor with 2-12; 541's divisors start beyond that range. 541 is odd, digit sum 10 for 541, digital root 1 for 541. 541 has 2 primes within 10 of 541.