λ
Sigma Notebook

2,158,161

3 × 59 × 89 × 137
Deficient Odd Composite

2,158,161 is odd and not a perfect square. Its factorization is 3 × 59 × 89 × 137 and its 16 divisors sum to 2,980,800.

Prime Factor Structure

Factorization String 3 × 59 × 89 × 137
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 2,980,800
Proper Divisor Sum 822,639
Digit Sum / Digital Root 24 (Root: 6)
Adjacent Primes #2158157 ← → #2158171

Radix Representation

Decimal 2158161
Binary 1000001110111001010001 (22 bits)
Octal 0o10167121
Hexadecimal 0x20EE51

Divisor Catalog (16)

1 3 59 89 137 177 267 411 5,251 8,083 12,193 15,753 24,249 36,579 719,387 2,158,161

Collatz Trajectory (117 steps to reach 1)

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

2,158,161 6,474,484 3,237,242 1,618,621 4,855,864 2,427,932 1,213,966 606,983 1,820,950 910,475 2,731,426 1,365,713 4,097,140 2,048,570 1,024,285 3,072,856 1,536,428 768,214 384,107 1,152,322 576,161 1,728,484 864,242 432,121 1,296,364 648,182 324,091 972,274 486,137 1,458,412 729,206 364,603 1,093,810 546,905 1,640,716 820,358 410,179 1,230,538 615,269 1,845,808 922,904 461,452 230,726 115,363 346,090 173,045 519,136 259,568 129,784 64,892 32,446 16,223 48,670 24,335 73,006 36,503 109,510 54,755 164,266 82,133

More profiles

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