Each of the 2,3,5,7 is a prime number.
2 + 3 + 5 - 7 = 3 is a prime number.
2 + 3 - 5 + 7 = 7 is a prime number.
2 - 3 + 5 + 7 = 11 is a prime number.
2 + 3 + 5 + 7 = 17 is a prime number.
2 * 3 + 5 * 7 = 41 is a prime number.
2 * 3 * 5 * 7 - 2 - 3 - 5 - 7 = 193 is a prime number.
2 * 3 * 5 * 7 + 2 + 3 + 5 + 7 = 227 is a prime number.
2³ + 3³+ 5³ + 7³ = 503 is a prime number.
2,357 is a prime number.
2² + 3³ + 5⁵ + 7⁷ = 826,699 is a prime number.
2,357 is a sexy prime. (p-6, p)
2,357 is a Sophie Germain priem. (p, 2p-1)