RSA Private-Key: (5 bit, 2 primes)
     modulus: 21 (0x15)
     publicExponent: 65537 (0x10001)
     privateExponent: 5 (0x5)
     prime1: 3 (0x3)
     prime2: 7 (0x7)
     exponent1: 1 (0x1)
     exponent2: 5 (0x5)
     coefficient: 1 (0x1)

-----BEGIN RSA PRIVATE KEY-----
MB0CAQACARUCAwEAAQIBBQIBAwIBBwIBAQIBBQIBAQ==
-----END RSA PRIVATE KEY-----