# 1581 One Teardrop among Millions

Contents

### Today’s Puzzle:

Earlier this week the United States surpassed 400,000 deaths from the novel coronavirus. Over 2,000,000 people have died from the virus worldwide. Most of these people died in isolation away from loved ones. Most of the millions of tears shed have also been in isolation. New and more contagious strains of the virus have arisen in various parts of the world threatening to make the death toll worse and the number of tears to grow exponentially. Each of us can and must do our part to flatten the curve and thus restrict the number of deaths and the number of tears.

### Factors of 1581:

• 1581 is a composite number.
• Prime factorization: 1581 = 3 × 17 × 31.
• 1581 has no exponents greater than 1 in its prime factorization, so √1581 cannot be simplified.
• The exponents in the prime factorization are 1, 1, and 1. Adding one to each exponent and multiplying we get (1 + 1)(1 + 1)(1 + 1) = 2 × 2 × 2 = 8. Therefore 1581 has exactly 8 factors.
• The factors of 1581 are outlined with their factor pair partners in the graphic below.

### Another Fact about the Number 1581:

1581 is the hypotenuse of a Pythagorean triple:
744-1395-1581, which is (8-15-17) times 93.

## 5 thoughts on “1581 One Teardrop among Millions”

1. thank you for these words. Any single thing we do seems like a single drop in the ocean, but the ocean is made of nothing more than a collection of single drops. Each of us doing what we can do, while keeping those who have gone in our hearts, is all we can do and that’s all we need to do.

• ivasallay

Thank you for your words as well. It is easy to forget that a mighty ocean is made from millions of single drops of water. We can only do what we can do and not more than that.

2. Very good points, we do add up, together.
Thank you for your focus on mathematics, and I do hope that you’ll have time to drop by and let me know how you think our math and Adult Education posts might complement one another, in adding some good to the ocean?
Best regards,
-Shira

• ivasallay

Thank you! Your Adult Education posts focus not just on mathematics, but also on other subjects that will help students realize their dreams.

• I certainly hope so, thank you so much!
Stay safe,
-Shira

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