Name #175 of 1000 · Viṣṇu Sahasranāma
महाशक्तिःmahāśaktiḥ
Mahashakti
He of infinite power
From shloka 19 · chapter Kūrma
महाबुद्धिर्महावीर्यो महाशक्तिर्महाद्युतिः ।
अनिर्देश्यवपुः श्रीमानमेयात्मा महाद्रिधृक् ॥
mahābuddhirmahāvīryo mahāśaktirmahādyutiḥ
anirdeśyavapuḥ śrīmānameyātmā mahādridhṛk
Also in this shloka: mahābuddhiḥ · mahāvīryaḥ · mahādyutiḥ · anirdeśyavapuḥ · śrīmān · ameyātmā · mahādridhṛk