656430109694 occurs in 𝜋 at position 656430109694! This cannot be a coincidence! 😲

DIVISIBILITY TESTS: Divisibility by 2: The last digit is divisible by 2. Divisibility by 3: The sum of the digits is divisible by 3. Divisibility by 4: The number formed from the last 2 digits is divisible by 4. Divisibility by 5: The last digit is either 0 or 5.

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These patterns feel as if God Himself designed them.

Secrets of Pascal's Triangle

Challange for you Each of the three big circles passes through four small white circles. Place the digits from 1 to 6 in the white circles so that the numbers on each big circle add up to 14.

Why 13 ?? ⏰

Divide this clock face with two straight lines so that the sum of the numbers in each section is the same.

Every 10-digit ISBN has a hidden math trick: if you multiply its digits by 10, 9, 8… down to 1 and add them up, the total will always be a multiple of 11—a built-in error check that keeps barcode numbers from being entered incorrectly.

The prime number 73,939,133 has a remarkable property. If you keep removing one digit at a time from the right, every number you get is still prime: 73,939,133 is prime. 7,393,913 is prime. 739,391 is prime. 73,939 is prime. 7,393 is prime. 739 is prime. 73 is prime. 7 is prime.

As rare as a prime with 1800 digits — that’s 𝕏

144 and 441 are mirror images of each other. A fun fact is that the same is true of their square roots 12 and 21.

Can you solve this ⁉️🤔💭

Strange universe. Ancient magical math from India. “Inscribed Lotus” (Padma Vrtta), by Indian mathematician Nārāyaṇa (1356). Certain groups of 12 numbers have the same sum, 294. More colors below. Info: archimedes-lab.org/2020/12/20/mag…, used with permission [mathematics, maths]

Pick a chair and I’ll expose you🤝

1+3+5+7+... will always equal a square number. Here's an example of a proof by induction.

Do you know?

Why did school never make it this simple?

Square numbers in 1 second🔢