Parāmbā is worshipped through various mantras. Of these, Pañcadaśī, śuddha ṣōḍaśī, Saubhāgya brahmavidyā or Saubhāgya pañcadaśī (ṣōḍaśī) and Mahāṣōḍaśī are the most important mantras in most of the Dākṣiṇātya śrīvidyā sampradāyas. The number of letters in these mantras is indicated by the names of Parāmbā based on kaṭapaya calculations.
Name 1: Lalitāmbā
La-3; li-3; tAm-6; bA-3
Total: 3+3+6+3 = 15 -> śuddha pañcadaśī
Name 2: Lalitāmbikā
La-3; li-3; tAm-6; bi-3; kA-1
Total: 3+3+6+3+1= 16 -> śuddha ṣōḍaśī
Name 3: śrīlalitāmbikā
shrI-2; La-3; li-3; tAm-6; bi-3; kA-1
Total: 2+3+3+6+3+1= 18 -> Saubhāgya brahmavidyā
Name 4: śrīrājarājēśvarī
shrI-2; rA-2; ja-8; rA-2; je-8; shva-4; rI-2
Total: 2+2+8+2+8+4+2 = 28 -> Mahāṣōḍaśī
The same can be seen with respect to caṇḍī as well. caṇ-6 and ḍī-3, thus indicating 6+3=9. On reversing the digits, the mantra denotes the thirty-six tattvas starting from śiva till dharā.