Panna is from the Hungarian Panna — diminutive of Anna — from the Hebrew Channah (grace). Panna is one of the Hungarian feminine diminutives — used affectionately across Hungary, Transylvania, and the Hungarian diaspora. figure in modern Hungarian feminine naming tradition.
Panna does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Panna reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.