Amazing prime numbers

- Sneha Devan XIB -

Here are few amazing prime numbers, these prime numbers were proved by the XVIII

^{th}century.
31, 331, 3331 ,33331 ,333331, 3333331 ,33333331.

angel number 412

**Rules**

` `** Step 1 **

` Select any whole number. `

` `** Step 2 **

` If it is an even number, divide by 2; if it is odd number multiply by 3 and add 1. `

` `** Step 3 **

` Repeat the process mentioned in step 2 until you get the loop value 4, 2, 1 in `

` repetition. `

**Example**

` Whole number is 15. `

` 15 is an odd no; so (15 × 3) + 1 = 46 `

` 46 is an even no; so 46 / 2 = 23 `

` 23 is an odd no; so (23 × 3) + 1 = 70 `

` 70 is an even no; so 70 / 2 = 35 `

` 35 is an odd no; so (35 × 3) + 1 = 106 `

` 106 is an even no; so 106 / 2 = 53 `

` 53 is an odd no; so (53 × 3) + 1 = 160 `

` 160 is an even no; so 160 / 2 = 80 `

` 80 is an even no; so 80 / 2 = 40 `

` 40 is an even no; so 40 / 2 = 20 `

` 20 is an even no; so 20 / 2 = 10 `

` 10 is an even no; so 10 / 2 = 5 `

` 5 is an odd no; so (5 × 3) + 1 = 16 `

` 16 is an even no; so 16 / 2 = 8 `

` 8 is an even no; so 8 / 2 = `**4**

` 4 is an even no; so 4 / 2 = `**2**

` 2 is an even no; so 2 / 2 = `**1**

` 1 is an odd no; so (1 × 3) + 1 = `**4**

` 4 is an even no; so 4 / 2 = `**2**

2 is an even no; so 2 / 2 =1So the loop 4..2..1 goes on and on.

Tip :

**is the smallest prime formed by the two powers in logical order from right to left.***The angel number 421*
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