Each past felony sexual offense conviction will add five years to the maximum penalty of every felony sexual offense charge you are facing today. As first degree felonies have a maximum sentence of life imprisonment, the habitual sex offender statute applies only to second and third degree felony sexual offenses.
These sexual offenses include those listed in Utah Code § 76-5-401 through 414, sexual exploitation of a minor (§ 76-5b-201), and the felony offense of enticing a minor over the Internet (§ 76-4-401).
A past criminal record almost always weighs against a defendant through sentencing. You may be facing a judge who wants to punish you to the fullest extent of the law, adding many more years of prison time.