λ
Sigma Notebook

2,143,381

2143381
Deficient Odd Prime

2,143,381 is odd and not a perfect square. Its factorization is 2143381 and its 2 divisors sum to 2,143,382.

Prime Factor Structure

Factorization String 2143381
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 2,143,382
Proper Divisor Sum 1
Digit Sum / Digital Root 22 (Root: 4)
Adjacent Primes #2143369 ← → #2143391

Radix Representation

Decimal 2143381
Binary 1000001011010010010101 (22 bits)
Octal 0o10132225
Hexadecimal 0x20B495

Divisor Catalog (2)

Collatz Trajectory (73 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

2,143,381 6,430,144 3,215,072 1,607,536 803,768 401,884 200,942 100,471 301,414 150,707 452,122 226,061 678,184 339,092 169,546 84,773 254,320 127,160 63,580 31,790 15,895 47,686 23,843 71,530 35,765 107,296 53,648 26,824 13,412 6,706 3,353 10,060 5,030 2,515 7,546 3,773 11,320 5,660 2,830 1,415 4,246 2,123 6,370 3,185 9,556 4,778 2,389 7,168 3,584 1,792 896 448 224 112 56 28 14 7 22 11

More profiles

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