Hughes will be eligible for parole and time off for good behavior, which is usually about one-third of the sentence.
Anchorage Superior Court Judge Patrick McKay accepted the plea and sentenced Hughes on Monday.
The victim was Alec Ahsoak, a convicted sex offender who won the $500,000 jackpot in January. After taxes, Ahsoak took home a $350,000 prize. Hughes knew a relative of one or more of Ahsoak's sexual abuse victims, according to authorities.
The lottery also benefited the advocacy group Standing Together Against Rape, though the charity received much less than Ahsoak, about $11,000.
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