λ
Sequence Observatory

1,342,525

52 × 83 × 647
Deficient Odd Composite

Starting at 1,342,525, the Collatz iteration reaches 1 after 62 steps. The first transition is 4027576; the starting value is odd with 12 positive divisors.

Prime Factor Structure

Factorization String 5^2 × 83 × 647
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 1,687,392
Proper Divisor Sum 344,867
Digit Sum / Digital Root 22 (Root: 4)
Adjacent Primes #1342519 ← → #1342531

Radix Representation

Decimal 1342525
Binary 101000111110000111101 (21 bits)
Octal 0o5076075
Hexadecimal 0x147C3D

Divisor Catalog (12)

1 5 25 83 415 647 2,075 3,235 16,175 53,701 268,505 1,342,525

Collatz Trajectory (62 steps to reach 1)

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

1,342,525 4,027,576 2,013,788 1,006,894 503,447 1,510,342 755,171 2,265,514 1,132,757 3,398,272 1,699,136 849,568 424,784 212,392 106,196 53,098 26,549 79,648 39,824 19,912 9,956 4,978 2,489 7,468 3,734 1,867 5,602 2,801 8,404 4,202 2,101 6,304 3,152 1,576 788 394 197 592 296 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8

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