DMX has a challenge most parents would find daunting ... remembering the names of all of his kids, which now number 15.
The baker's dozen plus 2 was born Friday in NYC ... weighing in at 6 lbs, 10 oz.
His name -- Exodus Simmons. The mom is X's longtime GF, Desiree. It's her first child.
The rapper missed the delivery -- he was in Arizona when Exodus popped out. But he flew to NYC for the baby's first night in the world.
X tells us he's overjoyed, calling the baby a "blessing."
Lots of blessings.
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