λ
Sequence Observatory

2,574,521

2574521
Deficient Odd Prime

Starting at 2,574,521, the Collatz iteration reaches 1 after 99 steps. The first transition is 7723564; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 2574521
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 2,574,522
Proper Divisor Sum 1
Digit Sum / Digital Root 26 (Root: 8)
Adjacent Primes #2574511 ← → #2574529

Radix Representation

Decimal 2574521
Binary 1001110100100010111001 (22 bits)
Octal 0o11644271
Hexadecimal 0x2748B9

Divisor Catalog (2)

Collatz Trajectory (99 steps to reach 1)

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

2,574,521 7,723,564 3,861,782 1,930,891 5,792,674 2,896,337 8,689,012 4,344,506 2,172,253 6,516,760 3,258,380 1,629,190 814,595 2,443,786 1,221,893 3,665,680 1,832,840 916,420 458,210 229,105 687,316 343,658 171,829 515,488 257,744 128,872 64,436 32,218 16,109 48,328 24,164 12,082 6,041 18,124 9,062 4,531 13,594 6,797 20,392 10,196 5,098 2,549 7,648 3,824 1,912 956 478 239 718 359 1,078 539 1,618 809 2,428 1,214 607 1,822 911 2,734

More profiles

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