NestDev - Simple Prime Number Pseudocode (To Complete)

partialPrimeNumber.pseudocode

FUNCTION IsPrime(num, primeNumbers)
    IF num <= 1 THEN
        RETURN FALSE
    ENDIF

    IF num IN primeNumbers THEN
        RETURN TRUE
    ENDIF

    FOR i FROM 2 TO num - 1 DO
        IF num MOD i == 0 THEN
            RETURN FALSE
        ENDIF
    ENDFOR

    // If the number is prime, add it to the file
    APPEND num TO primeNumbers
    WRITE num TO "primeNumbers.txt"

    RETURN TRUE
END FUNCTION

MAIN
        ARRAY primeNumbers
        LOAD “primeNumbers.txt” INTO primeNumbers 
        
        INPUT "Enter a number: " TO number
        
        IF IsPrime(number, primeNumbers) THEN
            PRINT number, "is a prime number."
        ELSE
            PRINT number, "is not a prime number."
        ENDIF
END MAIN