λ
Sequence Observatory

1,502,975

52 × 79 × 761
Deficient Odd Composite

Starting at 1,502,975, the Collatz iteration reaches 1 after 119 steps. The first transition is 4508926; the starting value is odd with 12 positive divisors.

Prime Factor Structure

Factorization String 5^2 × 79 × 761
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 1,889,760
Proper Divisor Sum 386,785
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #1502971 ← → #1502989

Radix Representation

Decimal 1502975
Binary 101101110111011111111 (21 bits)
Octal 0o5567377
Hexadecimal 0x16EEFF

Divisor Catalog (12)

1 5 25 79 395 761 1,975 3,805 19,025 60,119 300,595 1,502,975

Collatz Trajectory (119 steps to reach 1)

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

1,502,975 4,508,926 2,254,463 6,763,390 3,381,695 10,145,086 5,072,543 15,217,630 7,608,815 22,826,446 11,413,223 34,239,670 17,119,835 51,359,506 25,679,753 77,039,260 38,519,630 19,259,815 57,779,446 28,889,723 86,669,170 43,334,585 130,003,756 65,001,878 32,500,939 97,502,818 48,751,409 146,254,228 73,127,114 36,563,557 109,690,672 54,845,336 27,422,668 13,711,334 6,855,667 20,567,002 10,283,501 30,850,504 15,425,252 7,712,626 3,856,313 11,568,940 5,784,470 2,892,235 8,676,706 4,338,353 13,015,060 6,507,530 3,253,765 9,761,296 4,880,648 2,440,324 1,220,162 610,081 1,830,244 915,122 457,561 1,372,684 686,342 343,171

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