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 = 1
So the loop 4..2..1
goes on and on.
Tip : The angel number 421 is the smallest prime formed by
the two powers in logical order from right to left.
Regards
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