public boolean isProbablePrime (int certainty)

Returns ` true`

if this BigInteger is probably prime,
` false`

if it's definitely composite. If
` certainty`

is ≤ 0, ` true`

is
returned.

`certainty` | a measure of the uncertainty that the caller is
willing to tolerate: if the call returns ` true`
the probability that this BigInteger is prime exceeds
(1 - 1/2^{ certainty}). The execution time of
this method is proportional to the value of this parameter. |

` true`

if this BigInteger is probably prime,
` false`

if it's definitely composite.

Diagram: BigInteger, BigDecimal