1,490,821

31 × 48091

Starting at 1,490,821, the Collatz iteration reaches 1 after 212 steps. The first transition is 4472464; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 31 × 48091

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,538,944

Proper Divisor Sum 48,123

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #1490813 ← → #1490833

Radix Representation

Decimal	1490821
Binary	101101011111110000101 (21 bits)
Octal	0o5537605
Hexadecimal	0x16BF85

Divisor Catalog (4)

1 31 48,091 1,490,821

Collatz Trajectory (212 steps to reach 1)

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

1,490,821 4,472,464 2,236,232 1,118,116 559,058 279,529 838,588 419,294 209,647 628,942 314,471 943,414 471,707 1,415,122 707,561 2,122,684 1,061,342 530,671 1,592,014 796,007 2,388,022 1,194,011 3,582,034 1,791,017 5,373,052 2,686,526 1,343,263 4,029,790 2,014,895 6,044,686 3,022,343 9,067,030 4,533,515 13,600,546 6,800,273 20,400,820 10,200,410 5,100,205 15,300,616 7,650,308 3,825,154 1,912,577 5,737,732 2,868,866 1,434,433 4,303,300 2,151,650 1,075,825 3,227,476 1,613,738 806,869 2,420,608 1,210,304 605,152 302,576 151,288 75,644 37,822 18,911 56,734

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