λ
Sequence Observatory

1,957,514

2 × 13 × 75289
Deficient Even Composite

Starting at 1,957,514, the Collatz iteration reaches 1 after 140 steps. The first transition is 978757; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 13 × 75289
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 3,162,180
Proper Divisor Sum 1,204,666
Digit Sum / Digital Root 32 (Root: 5)
Adjacent Primes #1957477 ← → #1957517

Radix Representation

Decimal 1957514
Binary 111011101111010001010 (21 bits)
Octal 0o7357212
Hexadecimal 0x1DDE8A

Divisor Catalog (8)

1 2 13 26 75,289 150,578 978,757 1,957,514

Collatz Trajectory (140 steps to reach 1)

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

1,957,514 978,757 2,936,272 1,468,136 734,068 367,034 183,517 550,552 275,276 137,638 68,819 206,458 103,229 309,688 154,844 77,422 38,711 116,134 58,067 174,202 87,101 261,304 130,652 65,326 32,663 97,990 48,995 146,986 73,493 220,480 110,240 55,120 27,560 13,780 6,890 3,445 10,336 5,168 2,584 1,292 646 323 970 485 1,456 728 364 182 91 274 137 412 206 103 310 155 466 233 700 350

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