λ
Sequence Observatory

8,971,942

2 × 7 × 640853
Deficient Even Composite

Starting at 8,971,942, the Collatz iteration reaches 1 after 212 steps. The first transition is 4485971; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 7 × 640853
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 15,380,496
Proper Divisor Sum 6,408,554
Digit Sum / Digital Root 40 (Root: 4)
Adjacent Primes #8971939 ← → #8971943

Radix Representation

Decimal 8971942
Binary 100010001110011010100110 (24 bits)
Octal 0o42163246
Hexadecimal 0x88E6A6

Divisor Catalog (8)

1 2 7 14 640,853 1,281,706 4,485,971 8,971,942

Collatz Trajectory (212 steps to reach 1)

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

8,971,942 4,485,971 13,457,914 6,728,957 20,186,872 10,093,436 5,046,718 2,523,359 7,570,078 3,785,039 11,355,118 5,677,559 17,032,678 8,516,339 25,549,018 12,774,509 38,323,528 19,161,764 9,580,882 4,790,441 14,371,324 7,185,662 3,592,831 10,778,494 5,389,247 16,167,742 8,083,871 24,251,614 12,125,807 36,377,422 18,188,711 54,566,134 27,283,067 81,849,202 40,924,601 122,773,804 61,386,902 30,693,451 92,080,354 46,040,177 138,120,532 69,060,266 34,530,133 103,590,400 51,795,200 25,897,600 12,948,800 6,474,400 3,237,200 1,618,600 809,300 404,650 202,325 606,976 303,488 151,744 75,872 37,936 18,968 9,484

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